Individual provider

Darshan Patel, MD

Obesity Medicine (Preventive Medicine) Physician Internal Medicine Physician Obesity Medicine (Internal Medicine) Physician Medicare enrolled

Darshan Patel, MD is an Obesity Medicine (Preventive Medicine) Physician in Deer Park, IL, registered under NPI 1376920264. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty.

Getting there

The practice address on file is 20330 N DEER PARK BLVD STE 130, Deer Park, IL 60010. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.

20330 N DEER PARK BLVD STE 130, Deer Park, IL 60010 Open in Google Maps →

Credentials and Medicare

State licence
LicenceStateSpecialty
036.155781 IL Obesity Medicine (Preventive Medicine)… primary
036.155781 IL Internal Medicine Physician
A156554 CA Obesity Medicine (Internal Medicine)…
4465-320 WI Obesity Medicine (Internal Medicine)…
4465-320 WI Internal Medicine Physician
01091669A IN Obesity Medicine (Internal Medicine)…
01091669A IN Internal Medicine Physician
97575 GA Internal Medicine Physician
EMC004011 MI Obesity Medicine (Internal Medicine)…
EMC0004011 MI Internal Medicine Physician
35C.001018 OH Internal Medicine Physician
A156554 CA Internal Medicine Physician
35C.001018 OH Obesity Medicine (Internal Medicine)…
036.155781 IL Obesity Medicine (Internal Medicine)…

Licences are recorded in 7 states: IL, CA, WI, IN, GA, MI, OH. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.

Medicare (PECOS)
Status
Approved
Provider type
Practitioner - Internal Medicine
PAC ID
0143578096

Enrolled in Medicare 2 times, across 2 states:

StateEnrollment IDProvider type
California I20180808003465 Practitioner - Internal Medicine
Illinois I20241230003311 Practitioner - Internal Medicine

Medicare enrolment is recorded as approved under the provider type Practitioner - Internal Medicine. There are 2 separate enrolment records across 2 states (CA, IL). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.

Licensed in 7 states

This provider holds licences in 7 states: California, Georgia, Illinois, Indiana, Michigan, Ohio and Wisconsin. The practice address on file is in Deer Park, IL, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.

CA California
Licence
A156554
Specialty
Obesity Medicine (Internal Medicine)…
Verify with the CA board →
GA Georgia
Licence
97575
Specialty
Internal Medicine Physician
Verify with the GA board →
IL Illinois practice address
Licence
036.155781
Specialty
Obesity Medicine (Preventive Medicine)…
Verify with the IL board →
IN Indiana
Licence
01091669A
Specialty
Obesity Medicine (Internal Medicine)…
Verify with the IN board →
MI Michigan
Licence
EMC004011
Specialty
Obesity Medicine (Internal Medicine)…
Verify with the MI board →
OH Ohio
Licence
35C.001018
Specialty
Internal Medicine Physician
Verify with the OH board →
WI Wisconsin
Licence
4465-320
Specialty
Obesity Medicine (Internal Medicine)…
Verify with the WI board →

Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.

What Obesity Medicine covers

A physician who specializes in the treatment of obesity demonstrates competency in and a thorough understanding of the treatment of obesity and the genetic, biologic, environmental, social, and behavioral factors that contribute to obesity. The obesity medicine physician employs therapeutic interventions including diet, physical activity, behavioral change, and pharmacotherapy. The obesity medicine physician utilizes a comprehensive approach, and may include additional resources such as dietitians, exercise physiologists, mental health professionals and bariatric surgeons as indicated to achieve optimal results. Additionally, the obesity medicine physician maintains competency in providing pre- peri- and post-surgical care of bariatric surgery patients, promotes the prevention of obesity, and advocates for those who suffer from obesity. NUCC Health Care Provider Taxonomy, code 2083B0002X
Allopathic & Osteopathic Physicians Preventive Medicine Obesity Medicine

All registered taxonomy codes

This provider registers 14 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.

CodeSpecialtyLicenceState
2083B0002X Obesity Medicine (Preventive Medicine) Physician Obesity Medicine 036.155781 IL primary
207R00000X Internal Medicine Physician 036.155781 IL
207RB0002X Obesity Medicine (Internal Medicine) Physician Obesity Medicine A156554 CA
207RB0002X Obesity Medicine (Internal Medicine) Physician Obesity Medicine 4465-320 WI
207R00000X Internal Medicine Physician 4465-320 WI
207RB0002X Obesity Medicine (Internal Medicine) Physician Obesity Medicine 01091669A IN
207R00000X Internal Medicine Physician 01091669A IN
207R00000X Internal Medicine Physician 97575 GA
207RB0002X Obesity Medicine (Internal Medicine) Physician Obesity Medicine EMC004011 MI
207R00000X Internal Medicine Physician EMC0004011 MI
207R00000X Internal Medicine Physician 35C.001018 OH
207R00000X Internal Medicine Physician A156554 CA
207RB0002X Obesity Medicine (Internal Medicine) Physician Obesity Medicine 35C.001018 OH
207RB0002X Obesity Medicine (Internal Medicine) Physician Obesity Medicine 036.155781 IL

The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.

Full NPPES record

An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.

NPI1376920264 valid check digit
Entity typeIndividual (NPI-1)
Enumeration dateApr 30, 2015
Last updatedSep 8, 2025
StatusActive
Sole proprietorNo
GenderMale
CredentialMD
Practice address 20330 N DEER PARK BLVD STE 130
Deer Park, IL 60010
(312) 625-1889
Fax (224) 344-6981
This record was updated on Sep 8, 2025, which is recent enough that the contact details are likely still accurate.

Number check

1376920264 passes the NPI check digit test The final digit 4 matches the value computed from the first nine digits, so this is a well-formed NPI.
How the check works, step by step

Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.

Digit 8 0 8 4 0 1 3 7 6 9 2 0 2 6
Doubled? ×2 ×2 ×2 ×2 ×2 ×2 ×2
Value 8 0 8 8 0 2 3 5 6 9 2 0 2 3

Sum = 56 · next multiple of 10 = 60 · check digit = 4 · actual last digit = 4

A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.

Common questions

What is NPI number 1376920264?
NPI 1376920264 is the National Provider Identifier assigned to Darshan Patel, MD in Deer Park, IL. It is a 10-digit number issued by the Centers for Medicare & Medicaid Services and used on claims, referrals, and prescriptions to identify the provider.
What does Obesity Medicine cover?
A physician who specializes in the treatment of obesity demonstrates competency in and a thorough understanding of the treatment of obesity and the genetic, biologic, environmental, social, and behavioral factors that contribute to obesity. The obesity medicine physician employs therapeutic interventions including…
How do I contact Darshan Patel, MD?
The phone number on file with NPPES is (312) 625-1889, last updated Sep 8, 2025. Because NPPES is only updated when a provider files a change, call ahead to confirm the number and the current practice address before visiting.
Does Darshan Patel, MD accept Medicare?
This NPI has an approved Medicare enrolment in PECOS, which means the provider is enrolled to bill Medicare. Enrolment does not guarantee they are accepting new Medicare patients — verify directly with the office.
Is NPI 1376920264 a valid number?
Yes. 1376920264 passes the Luhn check digit validation that CMS uses for NPI numbers, and it resolves to an active record in the registry.
How to use this page. Everything here comes from public federal records. Tips Health does not verify quality of care, confirm that a licence is currently active, or check malpractice history, and accepts no fees for placement. A listing is not a recommendation. Verify independently before seeking care.