NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1689171779 MD
Verify on CMS → Fatima Khan, MD
Gastroenterology Physician in New Haven, Connecticut.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,567 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
111
Medicare Part D claims · 30 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
60%
generic claims · 40% brand-name · higher generic rates reduce patient out-of-pocket costs
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
Fatima Khan, MD filed 111 Medicare Part D claims in 2023 as a Gastroenterology Physician in New Haven, Connecticut, prescribing 60% generic.
- 111
- Part D claims, 2023
- 60%
- 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.
Fatima Khan, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
111 35th percentile higher than 35% of 1,370,886 prescribers
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
✓
Board certification likely (heuristic, not verified)
Fatima Khan, 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).
What does the federal data show about Fatima Khan, MD?
Quality data not reportedPrimary specialty
Gastroenterology Physician
Medicare Part D claims
111 87% vs specialty avg
Specialty distribution in Connecticut
How Gastroenterology Physician compares to other specialties among Connecticut 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).
Fatima Khan, MD appears in the CMS NPPES registry as a Gastroenterology Physician provider holding MD credentials at 20 YORK ST, New Haven, CT, 06510, with a listed phone of (203) 688-4242. NPI 1689171779 was issued on 04/06/2018.
Medicare Part D records for calendar year 2023 show 111 prescription claims written by this provider, covering 30 Medicare beneficiaries and totaling roughly $29K in drug spend, split 40% brand-name and 60% generic by claim count.
Gastroenterology Physician is a mid-sized specialty nationwide, with 16,567 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 | 1689171779 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 04/06/2018 |
Hospital and facility affiliations
Facilities where Fatima Khan, 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.
Yale University
New Haven, CT
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Above average
Fatima Khan, MD - brand share 40.0%
Gastroenterology Physician average
40% brand-name claims vs 60% generic, on 111 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.
111
Total Claims
$29K
Total Drug Cost
30
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 164
- Total Day Supply
- 4,825
- Brand vs Generic
- 40% brand / 60% generic
- Brand Drug Cost
- $28K
- Generic Drug Cost
- $1K
Patient Demographics
- Average Patient Age
- 64.2 years
- Avg HCC Risk Score
- 1.20
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Fatima Khan, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Linzess
Linzess
28 claims
- Famotidine
Famotidine
23 claims
- Omeprazole
Omeprazole
20 claims
- Pantoprazole Sodium
Pantoprazole Sodium
13 claims
| Drug | Claims |
|---|---|
| Linzess Linaclotide | 28 |
| Famotidine | 23 |
| Omeprazole | 20 |
| Pantoprazole Sodium | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How Fatima Khan, MD fits within the Gastroenterology Physician landscape nationally.
16,567
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider
Fatima Khan, MD's 111 claims are below the specialty average of 833.
Nearby Gastroenterology Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Khan.
Dr. Abera Abay
M.D.
Norwich, CT
Dr. Clara Abraham
MD
New Haven, CT
Dr. Charles Adelmann
M.D.
Norwalk, CT
Dr. Anant Agarwalla
M.D.
Wallingford, CT
Dr. Badr Al Bawardy
MD
New Haven, CT
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 Connecticut 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 Fatima Khan, MD's specialty? ▼
Fatima Khan, MD specializes in Gastroenterology Physician and practices in New Haven, Connecticut. Credentials: MD.
How much does Fatima Khan, MD prescribe under Medicare Part D? ▼
In 2023, Fatima Khan, MD wrote 111 Medicare Part D claims totaling $29K in drug costs for 30 beneficiaries.
Where is Fatima Khan, MD located? ▼
Fatima Khan, MD is located at 20 YORK ST, New Haven, CT, 06510. Phone: (203) 688-4242.
What is Fatima Khan, MD's NPI number? ▼
Fatima Khan, MD's National Provider Identifier (NPI) is 1689171779, issued on 04/06/2018.
Does Fatima Khan, MD prescribe more brand-name or generic drugs? ▼
Fatima Khan, MD's prescribing is 40% brand-name and 60% generic drugs by claim count, with $28K in brand drug costs.
How many Gastroenterology Physician providers are there in the US? ▼
There are 16,567 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 Fatima Khan, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Fatima Khan, MD's most frequently prescribed drugs include Linzess, Famotidine, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Fatima Khan, MD accept Medicare? ▼
Fatima Khan, MD appears in CMS Medicare data with 111 Part D claims and 30 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Fatima Khan, MD's credentials? ▼
Fatima Khan, MD's NPI is 1689171779 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
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.
- 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.