NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1982692828 M.D.
Verify on CMS → Mark Birns, M.D.
Gastroenterology Physician in Rockville, Maryland.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 17,061 in Gastroenterology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
2K
Medicare Part D claims · 424 beneficiaries · Gastroenterology Physician avg: 848
Industry payments
$884.41
42 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Mark Birns, M.D. filed 1,827 Medicare Part D claims in 2024 as a Gastroenterology Physician in Rockville, Maryland.
- 2K
- Part D claims, 2024
- $884.41
- industry payments (Sunshine Act)
- ≥83rd
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Mark Birns, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1982692828), first enumerated 10/13/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,827 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Reported
Industry payment transparency
$884.41 in reported industry payments (42 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1982692828 · Gastroenterology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1982692828
- ENUM-LEGACY 2005
- TAX-MID 17K Gastroenterology Physician
- RX-MID 1,827
- BOOK-THIN 424 in Maryland
- PHOTO-ENUM James Sattler · 2005
Mark Birns, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
1,827 ≥ 83rd percentile 83% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
Board-eligible specialty (heuristic, not verified)
Mark Birns, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Mark Birns, M.D.?
Quality data not reportedPrimary specialty
Gastroenterology Physician
Medicare Part D claims
1,827 115% vs specialty avg
Specialty distribution in Maryland
How Gastroenterology Physician compares to other specialties among Maryland providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Gastroenterology Physician. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1982692828 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 10/13/2005 |
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 Mark Birns, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$884
Largest payer
ABBVIE INC.
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
1,827
Total Claims
$535K
Total Drug Cost
424
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 4,740.967
- Total Day Supply
- 138,579
- Generic Drug Cost
- $61K
- Antibiotic Claims
- 24
Patient Demographics
- Average Patient Age
- 74.2 years
- Avg HCC Risk Score
- 0.85
- Gender Split
- 53% female / 47% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Mark Birns, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Famotidine
Famotidine
659 claims
- Omeprazole 190
Omeprazole
190 claims
- Pantoprazole Sodium 170
Pantoprazole Sodium
170 claims
- Dicyclomine Hcl 101
Dicyclomine Hcl
101 claims
- Rabeprazole Sodium 83
Rabeprazole Sodium
83 claims
- Esomeprazole Magne… 59
Esomeprazole Magnesium
59 claims
- Metoclopramide Hcl 45
Metoclopramide Hcl
45 claims
- Linzess 39
Linzess
39 claims
| Drug | Claims |
|---|---|
| Famotidine | 659 |
| Omeprazole | 190 |
| Pantoprazole Sodium | 170 |
| Dicyclomine Hcl | 101 |
| Rabeprazole Sodium | 83 |
| Esomeprazole Magnesium | 59 |
| Metoclopramide Hcl | 45 |
| Linzess Linaclotide | 39 |
| Clenpiq Sod Picosulf/Mag Ox/Citric Ac | 34 |
| Lansoprazole | 32 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How Mark Birns, M.D. fits within the Gastroenterology Physician landscape nationally.
17,061
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
848
Avg Claims per Provider
Mark Birns, M.D.'s 1,827 claims are above the specialty average of 848.
Nationwide Gastroenterology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Birns, both outside Maryland so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Gastroenterology Physician Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Birns.
One of 424 Gastroenterology Physician providers enrolled in Maryland, 5 are shown here.
Dr. Maaza Abdi
M.D.
Baltimore, MD
Dr. Tsion Abdi
MD
Baltimore, MD
Dr. Hamza Abdulla
M.D.
Easton, MD
Dr. Thomas Abernathy
M.D.
Catonsville, MD
Dr. Ruben Acosta
M.D.
Silver Spring, MD
Compare Gastroenterology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Mark Birns, M.D.'s specialty? ▼
Mark Birns, M.D. specializes in Gastroenterology Physician and practices in Rockville, Maryland. Credentials: M.D..
How much does Mark Birns, M.D. prescribe under Medicare Part D? ▼
In 2024, Mark Birns, M.D. wrote 1,827 Medicare Part D claims totaling $535K in drug costs for 424 beneficiaries.
Where is Mark Birns, M.D. located? ▼
Mark Birns, M.D. is located at 9711 MEDICAL CENTER DR, Rockville, MD, 20850. Phone: (301) 251-0015.
What is Mark Birns, M.D.'s NPI number? ▼
Mark Birns, M.D.'s National Provider Identifier (NPI) is 1982692828, issued on 10/13/2005.
How many Gastroenterology Physician providers are there in the US? ▼
There are 17,061 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 848 Medicare Part D claims per year.
What drugs does Mark Birns, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Mark Birns, M.D.'s most frequently prescribed drugs include Famotidine, Omeprazole, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mark Birns, M.D. accept Medicare? ▼
Mark Birns, M.D. appears in CMS Medicare data with 1,827 Part D claims and 424 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Birns, M.D.'s credentials? ▼
Mark Birns, M.D.'s NPI is 1982692828 with credentials M.D.. 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
View source datasets and methodology notes
- 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.