1. Home
  2. Directory
  3. Maryland
  4. Annapolis
  5. Pathology
  6. NPI Profile

ANNAPOLIS REGIONAL PATHOLOGY SERVICES, LLC
NPI 1194184515
Pathology - Anatomic Pathology & Clinical Pathology in Annapolis, MD

Active since February 12, 2016
2001 MEDICAL PARKWAY, ATTN: DR. SANFORD ROBBINS DEPT. OF PATHOLOGY, ANNAPOLIS, MD 21401(443) 481-4252 Get Directions Write a Review

NPPES record last updated: February 12, 2016. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Annapolis Regional Pathology Services, Llc NPPES

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

ANNAPOLIS REGIONAL PATHOLOGY SERVICES, LLC (NPI 1194184515) is a healthcare organization registered as an anatomic pathology & clinical pathology in Annapolis, Maryland and active in the NPI registry since February 2016. The organization lists Sanford Halpin Robbins, Manager, as its authorized official.

NPPES Registry Identity

NPI1194184515
Entity TypeOrganization
Primary Taxonomy207ZP0102X
Legal Business NameANNAPOLIS REGIONAL PATHOLOGY SERVICES, LLC
Location Address2001 MEDICAL PARKWAY, ATTN: DR. SANFORD ROBBINS DEPT. OF PATHOLOGYAnnapolis, MD 21401
Mailing Address2001 Medical Parkway, Attn: Dr. Sanford Robbins Dept. Of PathologyAnnapolis, MD 21401 · (443) 481-4252
Phone(443) 481-4252
Organization SubpartNo
Authorized OfficialSanford Halpin RobbinsManager · (443) 481-4252
Enumeration DateFebruary 12, 2016
✔ NPI 1194184515 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
Definition
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
2001 MEDICAL PARKWAY, Annapolis, MD 21401
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE 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)

Annapolis Regional Pathology Services, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

6

Medicare enrollment records show 6 clinicians reassign Medicare billing to Annapolis Regional Pathology Services, LLC, which bills Medicare for the services they deliver. Of these, 3 practice at this address and 4 within 10 miles. They are listed nearest first.

Clinicians, nearest first (6)

William Weisburger, M.D.
Pathology
NPI 1518031897
2001 MEDICAL PKWY
Annapolis, MD 21401
(443) 481-4250
✔ PECOSSame address
Sanford Robbins, M.D.
Pathology
NPI 1326113796
2001 MEDICAL PKWY
Annapolis, MD 21401
(443) 481-4250
✔ PECOS✔ Accepts MedicareSame address
Jason Schallheim, MD
Pathology
NPI 1679809230
2001 MEDICAL PKWY DEPARTMENT OF PATHOLOGY
Annapolis, MD 21401
(443) 481-4254
✔ PECOS✔ Accepts MedicareSame address
Zhengtong Pei, M.D.
Pathology
NPI 1194083659
4831 TESLA DR STE F
Bowie, MD 20715
(240) 737-0080
✔ PECOS✔ Accepts Medicare9.9 mi
Jennifer Collins, M.P.H., D.O.
Pathology
NPI 1518257278
22 S GREENE ST
Baltimore, MD 21201
(410) 328-5555
✔ PECOS✔ Accepts Medicare21 mi
Matthew Gabrielson
Pathology
NPI 1013575075
600 N WOLFE ST
Baltimore, MD 21287
(410) 955-3980
✔ PECOS✔ Accepts Medicare21 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 Annapolis Regional Pathology Services, LLC's NPI number?

The NPI number for Annapolis Regional Pathology Services, LLC is 1194184515. It was assigned to this organization in the NPPES registry on February 12, 2016.

Where is Annapolis Regional Pathology Services, LLC located?

Annapolis Regional Pathology Services, LLC is located at 2001 Medical Parkway Attn: Dr. Sanford Robbins Dept. Of Pathology, Annapolis, MD 21401. The listed phone number is (443) 481-4252.

What is Annapolis Regional Pathology Services, LLC's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Annapolis Regional Pathology Services, LLC enrolled in Medicare?

Yes. Annapolis Regional Pathology Services, LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Annapolis Regional Pathology Services, LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians, all in Pathology, reassign their Medicare billing to Annapolis Regional Pathology Services, LLC. 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. Of these, 3 practice at this address and 4 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Annapolis Regional Pathology Services, LLC was last updated on February 12, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.