FREDERICK INTERNAL MEDICINE AND ENDOCRINOLOGY SERVICES, PA
NPI 1760590111
Internal Medicine - Endocrinology, Diabetes & Metabolism in Frederick, MD

Q: What is Frederick Internal Medicine And Endocrinology Services, PA's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Active since August 27, 2006

65 THOMAS JOHNSON DR STE C, FREDERICK, MD 21702(301) 663-3836(301) 663-0122 Get Directions Write a Review

NPPES record last updated: September 2, 2025. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Sep 2, 2025, Jul 17, 2024 (2 updates tracked since 2024).

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About Frederick Internal Medicine And Endocrinology Services, Pa NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

FREDERICK INTERNAL MEDICINE AND ENDOCRINOLOGY SERVICES, PA (NPI 1760590111) is a healthcare organization registered as an endocrinology, diabetes & metabolism in Frederick, Maryland and active in the NPI registry since August 2006. The organization lists Andrew Oliver Donelson, Partner Physician, as its authorized official.

NPPES Registry Identity

NPI1760590111

Entity TypeOrganization

Primary Taxonomy207RE0101X

Legal Business NameFREDERICK INTERNAL MEDICINE AND ENDOCRINOLOGY SERVICES, PA

Location Address65 THOMAS JOHNSON DR STE CFrederick, MD 21702-4371

Mailing Address65 Thomas Johnson Dr Ste CFrederick, MD 21702-4371 · (301) 663-3836 · Fax (301) 663-0122

Phone(301) 663-3836

Fax(301) 663-0122

Organization SubpartNo

Authorized OfficialAndrew Oliver DonelsonPartner Physician · (301) 663-3836

Enumeration DateAugust 27, 2006

Last NPPES UpdateSeptember 2, 20252 updates tracked since enumeration

NPPES CertifiedOctober 29, 2024

✔ NPI 1760590111 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians

Taxonomy Code207RE0101X

Definition

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.

Also ListedInternal MedicineTaxonomy 207R00000X

65 THOMAS JOHNSON DR STE C, Frederick, MD 21702

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Other Names 1

Other NameDonelson & Carnell Md Pa

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Frederick Internal Medicine And Endocrinology Services, Pa is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 4 clinicians reassign Medicare billing to Frederick Internal Medicine And Endocrinology Services, PA, which bills Medicare for the services they deliver. Of these, 4 practice at this address. They are listed nearest first.

Clinicians, nearest first (4)

Hemen Shah, MD

Internal Medicine

NPI 1821002601

65 THOMAS JOHNSON DRIVE SUITE C
Frederick, MD 21702

(301) 663-3836

✔ PECOS✔ Accepts MedicareSame address

Hirenkumar Shah, MD

Internal Medicine

NPI 1093742801

65 THOMAS JOHNSON DR SUITE C
Frederick, MD 21702

(301) 663-3836

✔ PECOS✔ Accepts MedicareSame address

Andrew Donelson, M.D.

Internal Medicine

NPI 1518996495

65 THOMAS JOHNSON DR SUITE C
Frederick, MD 21702

(301) 663-3836

✔ PECOS✔ Accepts MedicareSame address

Majd Hakim, MD

Endocrinology

NPI 1598871378

65 THOMAS JOHNSON DR SUITE C
Frederick, MD 21702

(301) 663-3836

✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Frederick Internal Medicine And Endocrinology Services, PA's NPI number?

The NPI number for Frederick Internal Medicine And Endocrinology Services, PA is 1760590111. It was assigned to this organization in the NPPES registry on August 27, 2006. The provider is also known as Donelson & Carnell MD PA.

Where is Frederick Internal Medicine And Endocrinology Services, PA located?

Frederick Internal Medicine And Endocrinology Services, PA is located at 65 Thomas Johnson Dr Ste C, Frederick, MD 21702. The listed phone number is (301) 663-3836.

What is Frederick Internal Medicine And Endocrinology Services, PA's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Frederick Internal Medicine And Endocrinology Services, PA enrolled in Medicare?

Yes. Frederick Internal Medicine And Endocrinology Services, PA is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Frederick Internal Medicine And Endocrinology Services, PA?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians in 2 Medicare specialties reassign their Medicare billing to Frederick Internal Medicine And Endocrinology Services, PA. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Internal Medicine (3) and Endocrinology (1). Of these, 4 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Frederick Internal Medicine And Endocrinology Services, PA was last updated on September 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.