2026 NPPES data Anatomic Pathology Physician NPI 1265472427 MD
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ROBERT ZIMMERMAN, MD

Anatomic Pathology Physician in POTTSTOWN, Pennsylvania. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
12
Medicare Part D claims · Anatomic Pathology Physician avg: 214
What the federal data reveals: ROBERT ZIMMERMAN, MD is a Anatomic Pathology Physician ([object Object]) practicing in POTTSTOWN, Pennsylvania with a Medicare Part D prescribing footprint of 12 claims .

What stands out: ROBERT ZIMMERMAN, MD filed 12 Medicare Part D claims in 2023 across POTTSTOWN, Pennsylvania. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

ROBERT ZIMMERMAN, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

ROBERT ZIMMERMAN, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 06/07/2006

NPI 1265472427

Primary specialty

Anatomic Pathology Physician

Niche

2,597 US NPIs in this specialty

Medicare Part D claims

12 94% vs specialty avg

2023 prescription claims

Specialty avg: 214

Specialty distribution in Pennsylvania

How Anatomic Pathology Physician compares to other specialties among Pennsylvania providers

Pennsylvania providers

Anatomic Pathology Physician share within Pennsylvania

1. Anatomic Pathology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Anatomic Pathology Physician share within Pennsylvania

Specialty board-certification context

Estimated specialty board-certified rate — Anatomic Pathology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Anatomic Pathology Physician ABMS/AOA estimate

Est. board-certified rate (Anatomic Pathology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Anatomic Pathology Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

ROBERT ZIMMERMAN, MD is a Anatomic Pathology Physician provider practicing in POTTSTOWN, Pennsylvania, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1265472427. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

ROBERT ZIMMERMAN, MD appears in the CMS NPPES registry as a Anatomic Pathology Physician provider holding MD credentials at 1600 E HIGH ST, POTTSTOWN, PA, 19464, with a listed phone of (610) 327-7238. NPI 1265472427 was issued on 06/07/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ZIMMERMAN most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 12 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $1K in drug spend. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Anatomic Pathology Physician is a narrow specialty nationwide, with 2,597 enrolled providers across 54 states and an average of 214 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

1600 E HIGH ST
POTTSTOWN, PA 19464

Provider Details

NPI 1265472427
Specialty Anatomic Pathology Physician
Credentials MD
Gender Male
NPI Issued 06/07/2006

Hospital and facility affiliations

Facilities where ROBERT ZIMMERMAN, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

ARIA HEALTH PHYSICIAN SERVICES
PHILADELPHIA, PA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

License & disciplinary context — Pennsylvania PA-BOM 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~45K Pennsylvania medical licensees in 2023 — they are NOT specific to ROBERT ZIMMERMAN, MD. To verify ROBERT ZIMMERMAN, MD's current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases

PA-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

12
Total Claims
$1K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
17
Total Day Supply
400
Generic Drug Cost
$612

Patient Demographics

Average Patient Age
61.0 years
Avg HCC Risk Score
0.86

Anatomic Pathology Physician Overview

How ROBERT ZIMMERMAN, MD fits within the Anatomic Pathology Physician landscape nationally.

2,597
Anatomic Pathology Physician Providers in US
54
States with Anatomic Pathology Physician
214
Avg Claims per Provider

ROBERT ZIMMERMAN, MD's 12 claims are below the specialty average of 214.

Nearby Anatomic Pathology Physician Providers in Pennsylvania

Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as ZIMMERMAN.

Compare Anatomic Pathology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ROBERT ZIMMERMAN, MD's specialty?
ROBERT ZIMMERMAN, MD specializes in Anatomic Pathology Physician and practices in POTTSTOWN, Pennsylvania. Credentials: MD.
How much does ROBERT ZIMMERMAN, MD prescribe under Medicare Part D?
In 2023, ROBERT ZIMMERMAN, MD wrote 12 Medicare Part D claims totaling $1K in drug costs for N/A beneficiaries.
Where is ROBERT ZIMMERMAN, MD located?
ROBERT ZIMMERMAN, MD is located at 1600 E HIGH ST, POTTSTOWN, PA, 19464. Phone: (610) 327-7238.
What is ROBERT ZIMMERMAN, MD's NPI number?
ROBERT ZIMMERMAN, MD's National Provider Identifier (NPI) is 1265472427, issued on 06/07/2006.
How many Anatomic Pathology Physician providers are there in the US?
There are 2,597 Anatomic Pathology Physician providers across 54 states in the US. The average Anatomic Pathology Physician provider writes 214 Medicare Part D claims per year.
Does ROBERT ZIMMERMAN, MD accept Medicare?
ROBERT ZIMMERMAN, MD appears in CMS Medicare data with 12 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROBERT ZIMMERMAN, MD's credentials?
ROBERT ZIMMERMAN, MD's NPI is 1265472427 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology