MASSACHUSETTS POST ACUTE MEDICAL SERVICES 1 PC
NPI 1699204503
Hospitalist in Annapolis, MD
About Massachusetts Post Acute Medical Services 1 Pc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MASSACHUSETTS POST ACUTE MEDICAL SERVICES 1 PC (NPI 1699204503) is a healthcare organization registered as a hospitalist in Annapolis, Maryland and active in the NPI registry since June 2017. The organization lists Stephen Holtzclaw, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Massachusetts Post Acute Medical Services 1 Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
26Medicare enrollment records show 26 clinicians reassign Medicare billing to Massachusetts Post Acute Medical Services 1 PC, which bills Medicare for the services they deliver. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 7
Nearest to this location (20)
See all 26Source: 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 Massachusetts Post Acute Medical Services 1 PC's NPI number?
The NPI number for Massachusetts Post Acute Medical Services 1 PC is 1699204503. It was assigned to this organization in the NPPES registry on June 6, 2017.
Where is Massachusetts Post Acute Medical Services 1 PC located?
Massachusetts Post Acute Medical Services 1 PC is located at 900 Van Buren St, Annapolis, MD 21403. The listed phone number is (865) 693-1000.
What is Massachusetts Post Acute Medical Services 1 PC's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Massachusetts Post Acute Medical Services 1 PC enrolled in Medicare?
Yes. Massachusetts Post Acute Medical Services 1 PC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Massachusetts Post Acute Medical Services 1 PC?
According to the CMS Revalidation Reassignment List (October 2026 release), 26 clinicians in 7 Medicare specialties reassign their Medicare billing to Massachusetts Post Acute Medical Services 1 PC. 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 Nurse Practitioner (17), Internal Medicine (4) and Addiction Medicine (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 Massachusetts Post Acute Medical Services 1 PC was last updated on June 6, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years 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.
# Massachusetts Post Acute Medical Services 1 Pc · NPI 1699204503
Hospitalist organization in Annapolis, Maryland. Organization record, active in the CMS NPPES registry since June 6, 2017.
## Identity
- **NPI:** 1699204503 (Entity type: Organization)
- **Enumerated:** June 6, 2017
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **Organization subpart:** No
- **Authorized official:** Stephen Holtzclaw, PRESIDENT
## Practice location
- **Address:** 900 VAN BUREN ST, Annapolis, MD 21403-2124
- **Phone:** (865) 693-1000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 26 clinicians in 7 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (17), Internal Medicine (4), Addiction Medicine (1); [full list](https://npiprofile.com/npi/1699204503/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 6, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1699204503) · Data from the CMS NPPES public registry.