2026 NPPES data Medical Physician Assistant NPI 1508044926 PA-C
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ANNEMARIE ZABBARA, PA-C

Medical Physician Assistant in ROCKVILLE, Maryland. 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
951
Medicare Part D claims · 162 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$644.37
29 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

ANNEMARIE ZABBARA, PA-C filed 951 Medicare Part D claims in 2023 as a Medical Physician Assistant in ROCKVILLE, Maryland, prescribing 91% generic.

951
Part D claims, 2023
91%
generic prescribing
$644.37
industry payments (Sunshine Act)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

ANNEMARIE ZABBARA, PA-C's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

951 Top 25% higher than 75% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). This entry sits in this band. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about ANNEMARIE ZABBARA, PA-C?

Quality data not reported

NPI registry status

Active

Issued 02/07/2008

NPI 1508044926

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

951 12% vs specialty avg

2023 prescription claims

Specialty avg: 1,077

Specialty distribution in Maryland

How Medical Physician Assistant compares to other specialties among Maryland providers

Maryland providers

Medical Physician Assistant share within Maryland

1. Medical Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Medical Physician Assistant share within Maryland

Specialty board-certification context

Estimated specialty board-certified rate — Medical Physician Assistant (ABMS / AOA reference)

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

Est. board-certified rate (Medical Physician Assistant) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Medical Physician Assistant) — 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).

ANNEMARIE ZABBARA, PA-C appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PA-C credentials at 15225 SHADY GROVE RD, ROCKVILLE, MD, 20850, with a listed phone of (301) 330-0661. NPI 1508044926 was issued on 02/07/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ZABBARA 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 951 prescription claims written by this provider, covering 162 Medicare beneficiaries and totaling roughly $55K in drug spend, split 9% brand-name and 91% generic by claim count. 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.

Medical Physician Assistant is a mid-sized specialty nationwide, with 40,527 enrolled providers across 55 states and an average of 1,077 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

15225 SHADY GROVE RD
ROCKVILLE, MD 20850

Provider Details

NPI 1508044926
Specialty Medical Physician Assistant
Credentials PA-C
Gender Female
NPI Issued 02/07/2008

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for ANNEMARIE ZABBARA, PA-C. Source: openpaymentsdata.cms.gov.

Total received

$644

Largest payer

AstraZeneca Pharmaceuticals LP

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Generic-heavy

ANNEMARIE ZABBARA, PA-C — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 951 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

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

951
Total Claims
$55K
Total Drug Cost
162
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,272
Total Day Supply
64,587
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$36K
Generic Drug Cost
$19K
Antibiotic Claims
83

Patient Demographics

Average Patient Age
75.0 years
Avg HCC Risk Score
0.80
Gender Split
68% female / 32% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What ANNEMARIE ZABBARA, PA-C prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
99
Levothyroxine Sodium
64
Amlodipine Besylate
48
Lisinopril
42
Losartan Potassium
38
Rosuvastatin Calcium
36
Escitalopram Oxalate
34
Citalopram Hbr
Citalopram Hydrobromide
23
Simvastatin
22
Metoprolol Succinate
21

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Medical Physician Assistant Overview

How ANNEMARIE ZABBARA, PA-C fits within the Medical Physician Assistant landscape nationally.

40,527
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,077
Avg Claims per Provider

ANNEMARIE ZABBARA, PA-C's 951 claims are below the specialty average of 1,077.

Nearby Medical Physician Assistant Providers in Maryland

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

Compare Medical Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is ANNEMARIE ZABBARA, PA-C's specialty?
ANNEMARIE ZABBARA, PA-C specializes in Medical Physician Assistant and practices in ROCKVILLE, Maryland. Credentials: PA-C.
How much does ANNEMARIE ZABBARA, PA-C prescribe under Medicare Part D?
In 2023, ANNEMARIE ZABBARA, PA-C wrote 951 Medicare Part D claims totaling $55K in drug costs for 162 beneficiaries.
Where is ANNEMARIE ZABBARA, PA-C located?
ANNEMARIE ZABBARA, PA-C is located at 15225 SHADY GROVE RD, ROCKVILLE, MD, 20850. Phone: (301) 330-0661.
What is ANNEMARIE ZABBARA, PA-C's NPI number?
ANNEMARIE ZABBARA, PA-C's National Provider Identifier (NPI) is 1508044926, issued on 02/07/2008.
Does ANNEMARIE ZABBARA, PA-C prescribe more brand-name or generic drugs?
ANNEMARIE ZABBARA, PA-C's prescribing is 9% brand-name and 91% generic drugs by claim count, with $36K in brand drug costs.
How many Medical Physician Assistant providers are there in the US?
There are 40,527 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,077 Medicare Part D claims per year.
What drugs does ANNEMARIE ZABBARA, PA-C prescribe most often?
Based on 2023 Medicare Part D data, ANNEMARIE ZABBARA, PA-C's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ANNEMARIE ZABBARA, PA-C accept Medicare?
ANNEMARIE ZABBARA, PA-C appears in CMS Medicare data with 951 Part D claims and 162 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ANNEMARIE ZABBARA, PA-C's credentials?
ANNEMARIE ZABBARA, PA-C's NPI is 1508044926 with credentials PA-C. 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