Individual provider

Andrew Spiro, M.D.

Internal Medicine Physician Endocrinology, Diabetes & Metabolism Physician Medicare enrolled

Andrew Spiro, M.D. is an Endocrinology, Diabetes & Metabolism Physician in Bethesda, MD, registered under NPI 1255771143. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.

Getting there

The practice address on file is WALTER REED NATIONAL MILITARY CTR 8901 ROCKVILLE PIKE, Bethesda, MD 20889. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.

WALTER REED NATIONAL MILITARY CTR 8901 ROCKVILLE PIKE, Bethesda, MD 20889 Open in Google Maps →

Credentials and Medicare

State licence
LicenceStateSpecialty
28232 NE Internal Medicine Physician
28232 NE Endocrinology, Diabetes & Metabolism… primary

This provider holds licence 28232 issued in NE. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.

Medicare (PECOS)
Status
Approved
Provider type
Order And Referring Only - Internal Medicine
PAC ID
6406278373
Enrollment ID
I20200623000670

Medicare enrolment is recorded as approved under the provider type Order And Referring Only - Internal Medicine. 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.

What Endocrinology, Diabetes & Metabolism covers

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems. NUCC Health Care Provider Taxonomy, code 207RE0101X
Allopathic & Osteopathic Physicians Internal Medicine Endocrinology, Diabetes & Metabolism

All registered taxonomy codes

This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.

CodeSpecialtyLicenceState
207R00000X Internal Medicine Physician 28232 NE
207RE0101X Endocrinology, Diabetes & Metabolism Physician Endocrinology, Diabetes & Metabolism 28232 NE primary

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.

NPI1255771143 valid check digit
Entity typeIndividual (NPI-1)
Enumeration dateJun 25, 2013
Last updatedAug 21, 2023
StatusActive
Sole proprietorYes
GenderMale
CredentialM.D.
Practice address WALTER REED NATIONAL MILITARY CTR 8901 ROCKVILLE PIKE
Bethesda, MD 20889
(301) 295-5165
Fax (301) 295-5170
The last update on file is Aug 21, 2023. 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

1255771143 passes the NPI check digit test The final digit 3 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 2 5 5 7 7 1 1 4
Doubled? ×2 ×2 ×2 ×2 ×2 ×2 ×2
Value 8 0 8 8 0 2 2 1 5 5 7 2 1 8

Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3

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 1255771143?
NPI 1255771143 is the National Provider Identifier assigned to Andrew Spiro, M.D. in Bethesda, MD. 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 Endocrinology, Diabetes & Metabolism cover?
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
How do I contact Andrew Spiro, M.D.?
The phone number on file with NPPES is (301) 295-5165, last updated Aug 21, 2023. 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 Spiro, 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 1255771143 a valid number?
Yes. 1255771143 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.