Individual provider

Andrew Maclennan, M.D.

Hospitalist Physician Internal Medicine Physician Student in an Organized Health Care Education/Training Program Medicare enrolled

Andrew Maclennan, M.D. is a Hospitalist Physician in Denver, CO, registered under NPI 1649430596. 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 1375 E 19TH AVE, Denver, CO 80218. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.

1375 E 19TH AVE, Denver, CO 80218 Open in Google Maps →

Credentials and Medicare

State licence
LicenceStateSpecialty
49625 CO Hospitalist Physician primary
49625 CO Internal Medicine Physician
150188 NC Student in an Organized Health Care…

Licences are recorded in 2 states: CO, NC. 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
9032381835

Medicare enrolment is recorded as approved under the provider type Practitioner - Internal Medicine. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.

Licensed in 2 states

This provider holds licences in 2 states: Colorado and North Carolina. The practice address on file is in Denver, CO, 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.

CO Colorado practice address
Licence
49625
Specialty
Hospitalist Physician
Verify with the CO board →
NC North Carolina
Licence
150188
Specialty
Student in an Organized Health Care…
Verify with the NC 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 Hospitalist covers

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients. NUCC Health Care Provider Taxonomy, code 208M00000X
Allopathic & Osteopathic Physicians Hospitalist

All registered taxonomy codes

This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.

CodeSpecialtyLicenceState
208M00000X Hospitalist Physician 49625 CO primary
207R00000X Internal Medicine Physician 49625 CO
390200000X Student in an Organized Health Care Education/Training Program 150188 NC

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.

NPI1649430596 valid check digit
Entity typeIndividual (NPI-1)
Enumeration dateJun 13, 2008
Last updatedJul 27, 2021
StatusActive
Sole proprietorNo
CredentialM.D.
Practice address 1375 E 19TH AVE
Denver, CO 80218
(303) 338-4545
Mailing address 10350 E DAKOTA AVE
Denver, CO 80247
Other identifiers 021729 · KAISER COMMERCIAL NUMBER (CO)
72204567 (CO)
The last update on file is Jul 27, 2021. Providers are only required to update NPPES when their information changes, so an older date does not necessarily mean the details are wrong — but it is worth a quick call before you travel.

Number check

1649430596 passes the NPI check digit test The final digit 6 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 6 4 9 4 3 0 5 9
Doubled? ×2 ×2 ×2 ×2 ×2 ×2 ×2
Value 8 0 8 8 0 2 6 8 9 8 3 0 5 9

Sum = 74 · next multiple of 10 = 80 · check digit = 6 · actual last digit = 6

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 1649430596?
NPI 1649430596 is the National Provider Identifier assigned to Andrew Maclennan, M.D. in Denver, CO. 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 Hospitalist Physician cover?
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for…
How do I contact Andrew Maclennan, M.D.?
The phone number on file with NPPES is (303) 338-4545, last updated Jul 27, 2021. 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 Andrew Maclennan, M.D. 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 1649430596 a valid number?
Yes. 1649430596 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.