NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1053574277 M.D.
Verify on CMS → Anish Mammen, M.D.
Gastroenterology Physician in New York, New York.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,601 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
549
Medicare Part D claims · 184 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
96.1/100
▲ 13 pts above national avg 83.1 · Exceptional
Industry payments
$1.2K
75 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Anish Mammen, M.D. reported a CMS MIPS final score of 96.1/100 - above the 83.1 national average - and filed 549 Medicare Part D claims in 2023.
- 96.1/100
- MIPS score · +13 vs avg
- 549
- Part D claims, 2023
- 92%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Anish Mammen, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
96 Top 17% higher than 83% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Anish Mammen, M.D. sits
This provider among gastroenterology physician peers
Across the 5,957 gastroenterology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Anish Mammen, M.D. writes more Part D claims than 35% of them and scores higher on MIPS quality than 82% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one gastroenterology physician peer from a representative sample of 60; the gold marker is Anish Mammen, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Anish Mammen, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Anish Mammen, M.D.?
High performer (top quartile)Primary specialty
Gastroenterology Physician
Medicare Part D claims
549 34% vs specialty avg
MIPS final score
96.1/100 13 pts vs avg
Specialty distribution in New York
How Gastroenterology Physician compares to other specialties among New York providers
Medicare quality performance, MIPS
Anish Mammen, M.D.'s 2023 MIPS final score plotted against the Gastroenterology Physician national average
- MIPS Final Score
- 96.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Gastroenterology Physician) - 96.1/100 vs national avg 83.1
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).
Anish Mammen, M.D. appears in the CMS NPPES registry as a Gastroenterology Physician provider holding M.D. credentials at 310 E 24TH ST, New York, NY, 10010, with a listed phone of (617) 513-9508. NPI 1053574277 was issued on 07/08/2008.
Medicare Part D records for calendar year 2023 show 549 prescription claims written by this provider, covering 184 Medicare beneficiaries and totaling roughly $122K in drug spend, split 8% brand-name and 92% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 96.1/100 for the 2023 performance year (Quality 92.1), compared with the national average of 83.1.
Gastroenterology Physician is a mid-sized specialty nationwide, with 16,601 enrolled providers across 54 states and an average of 833 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
Provider Details
| NPI | 1053574277 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/08/2008 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
96.0721
Final Score
Avg: 83.1
92.1442
Quality
Reporting: Group practice
Hospital and facility affiliations
Facilities where Anish Mammen, M.D. 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.
Harrisburg Gastroenterology, Ltd.
Harrisburg, 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).
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 Anish Mammen, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$1.2K
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.
License & disciplinary context - New York NYSBPMC 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 ~100K New York medical licensees in 2023 - they are NOT specific to Anish Mammen, M.D.. To verify Anish Mammen, M.D.'s current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases
NYSBPMC 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 New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Anish Mammen, M.D. - brand share 8.0%
Gastroenterology Physician average
8% brand-name claims vs 92% generic, on 549 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.
549
Total Claims
$122K
Total Drug Cost
184
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,336
- Total Day Supply
- 38,875
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $105K
- Generic Drug Cost
- $17K
- Antibiotic Claims
- 27
Patient Demographics
- Average Patient Age
- 70.6 years
- Avg HCC Risk Score
- 1.61
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 29, 65-74: 87, 75-84: 49, 85+: 19
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Anish Mammen, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Pantoprazole Sodium
Pantoprazole Sodium
240 claims
- Famotidine
Famotidine
110 claims
- Omeprazole 40
Omeprazole
40 claims
- Linzess 19
Linzess
19 claims
- Esomeprazole Magne… 14
Esomeprazole Magnesium
14 claims
- Dicyclomine Hcl 11
Dicyclomine Hcl
11 claims
| Drug | Claims |
|---|---|
| Pantoprazole Sodium | 240 |
| Famotidine | 110 |
| Omeprazole | 40 |
| Linzess Linaclotide | 19 |
| Esomeprazole Magnesium | 14 |
| Dicyclomine Hcl | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How Anish Mammen, M.D. fits within the Gastroenterology Physician landscape nationally.
16,601
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider
Anish Mammen, M.D.'s 549 claims are below the specialty average of 833.
Nearby Gastroenterology Physician Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Mammen.
Dr. Elie Abadie
MD
Brooklyn, NY
Dr. Hafsa Abbas
MD
Flushing, NY
Dr. Naeem Abbas
MD
Valley Stream, NY
Dr. Uzma Abbasi
M.D.
Oneida, NY
Amro Abdellatief
New York, NY
Compare Gastroenterology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the New York medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Gastroenterology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Anish Mammen, M.D.'s specialty? ▼
Anish Mammen, M.D. specializes in Gastroenterology Physician and practices in New York, New York. Credentials: M.D..
How much does Anish Mammen, M.D. prescribe under Medicare Part D? ▼
In 2023, Anish Mammen, M.D. wrote 549 Medicare Part D claims totaling $122K in drug costs for 184 beneficiaries.
What is Anish Mammen, M.D.'s Medicare quality score? ▼
Anish Mammen, M.D. has a CMS MIPS Final Score of 96.1/100 (Quality: 92.1). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Anish Mammen, M.D. located? ▼
Anish Mammen, M.D. is located at 310 E 24TH ST, New York, NY, 10010. Phone: (617) 513-9508.
What is Anish Mammen, M.D.'s NPI number? ▼
Anish Mammen, M.D.'s National Provider Identifier (NPI) is 1053574277, issued on 07/08/2008.
Does Anish Mammen, M.D. prescribe more brand-name or generic drugs? ▼
Anish Mammen, M.D.'s prescribing is 8% brand-name and 92% generic drugs by claim count, with $105K in brand drug costs.
How many Gastroenterology Physician providers are there in the US? ▼
There are 16,601 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
What drugs does Anish Mammen, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Anish Mammen, M.D.'s most frequently prescribed drugs include Pantoprazole Sodium, Famotidine, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Anish Mammen, M.D. accept Medicare? ▼
Anish Mammen, M.D. appears in CMS Medicare data with 549 Part D claims and 184 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Anish Mammen, M.D.'s credentials? ▼
Anish Mammen, M.D.'s NPI is 1053574277 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 (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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
Compiled from official public sources by the PlainDoctor editorial team.
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 May 2026.