KEYSTONE HOSPITALIST SERVICES OF ALABAMA, INC.
NPI 1275478232
Hospitalist in Troy, AL

Q: What is Keystone Hospitalist Services Of Alabama, Inc.'s specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Active since April 23, 2026

1330 HIGHWAY 231 S, TROY, AL 36081(334) 670-5000 Get Directions Write a Review

NPPES record last updated: April 23, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Keystone Hospitalist Services Of Alabama, Inc. NPPES

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

KEYSTONE HOSPITALIST SERVICES OF ALABAMA, INC. (NPI 1275478232) is a healthcare organization registered as a hospitalist in Troy, Alabama and active in the NPI registry since April 2026. The organization lists Glenn Adams, President, as its authorized official.

NPPES Registry Identity

NPI1275478232

Entity TypeOrganization

Primary Taxonomy208M00000X

Legal Business NameKEYSTONE HOSPITALIST SERVICES OF ALABAMA, INC.

Location Address1330 HIGHWAY 231 STroy, AL 36081-3058

Mailing Address4728 Spottswood Ave # 372Memphis, TN 38117-4817 · (901) 795-3600 · Fax (901) 795-6060

Phone(334) 670-5000

Organization SubpartNo

Authorized OfficialGlenn AdamsPresident · (901) 795-3600

Enumeration DateApril 23, 2026

NPPES CertifiedApril 23, 2026

✔ NPI 1275478232 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians

Taxonomy Code208M00000X

Definition

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.

1330 HIGHWAY 231 S, Troy, AL 36081

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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)

Keystone Hospitalist Services Of Alabama, Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 8 clinicians reassign Medicare billing to Keystone Hospitalist Services Of Alabama, Inc., which bills Medicare for the services they deliver. They are listed nearest first.

Clinicians, nearest first (8)

Kathlyn Diefenderfer, MD

Internal Medicine

NPI 1780606426

101 PROFESSIONAL LN
Enterprise, AL 36330

(334) 347-3404

✔ PECOS✔ Accepts Medicare32 mi

William Von Taaffe, MD

Internal Medicine

NPI 1508870817

440 TAYLOR RD SUITE 3380
Montgomery, AL 36117

(334) 213-6281

✔ PECOS✔ Accepts Medicare43 mi

Azad Kabir, M.D.

Internal Medicine

NPI 1285845933

4401 RIVERCHASE DR
Phenix City, AL 36867

(334) 732-3000

✔ PECOS✔ Accepts Medicare74 mi

Harrison Fuqua, MD

Family Practice

NPI 1972152791

4284 KELSON AVE
Marianna, FL 32446

(850) 482-2910

✔ PECOS✔ Accepts Medicare80 mi

Hanny Patel, MD

Family Practice

NPI 1356079891

1613 N MCKENZIE ST
Foley, AL 36535

(251) 949-3540

✔ PECOS✔ Accepts Medicare139 mi

Veronica Tassin, DO

Family Practice

NPI 1144626946

66 OLD AIRPORT RD
Hattiesburg, MS 39401

(601) 544-7500

✔ PECOS✔ Accepts Medicare200 mi

Edwin Villarreal, MD

Internal Medicine

NPI 1447418397

541 HISTORIC HWY 441-N
Demorest, GA 30535

(770) 219-7078

✔ PECOS✔ Accepts Medicare238 mi

Michael Wheat, D.O.

Hospitalist

NPI 1518492545

350 7TH ST N
Naples, FL 34102

(239) 624-3997

✔ PECOS✔ Accepts Medicare462 mi

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 Keystone Hospitalist Services Of Alabama, Inc.'s NPI number?

The NPI number for Keystone Hospitalist Services Of Alabama, Inc. is 1275478232. It was assigned to this organization in the NPPES registry on April 23, 2026.

Where is Keystone Hospitalist Services Of Alabama, Inc. located?

Keystone Hospitalist Services Of Alabama, Inc. is located at 1330 Highway 231 S, Troy, AL 36081. The listed phone number is (334) 670-5000.

What is Keystone Hospitalist Services Of Alabama, Inc.'s specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Keystone Hospitalist Services Of Alabama, Inc. enrolled in Medicare?

Yes. Keystone Hospitalist Services Of Alabama, Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Keystone Hospitalist Services Of Alabama, Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 8 clinicians in 3 Medicare specialties reassign their Medicare billing to Keystone Hospitalist Services Of Alabama, Inc.. 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 (4), Family Practice (3) and Hospitalist (1). Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Keystone Hospitalist Services Of Alabama, Inc. was last updated on April 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.