NPI registry status
Active
2026 NPPES data Allergy & Immunology (Internal Medicine) Physician NPI 1902082431 M.D.
Verify on CMS → Sherry Farzan, M.D.
Allergy & Immunology (Internal Medicine) Physician in Great Neck, 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 517 in Allergy & Immunology (Internal Medicine) 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
108
Medicare Part D claims · 17 beneficiaries · Allergy & Immunology (Internal Medicine) Physician avg: 798
Generic prescribing
74%
generic claims · 26% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
91.3/100
▲ 8 pts above national avg 83.1 · Exceptional
Industry payments
$235.39
2 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
Sherry Farzan, M.D. reported a CMS MIPS final score of 91.3/100 - above the 83.1 national average - and filed 108 Medicare Part D claims in 2023.
- 91.3/100
- MIPS score · +8 vs avg
- 108
- Part D claims, 2023
- 74%
- 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.
Sherry Farzan, 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
91 Top 37% higher than 63% 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 Sherry Farzan, M.D. sits
This provider among allergy & immunology (internal medicine) physician peers
Across the 130 allergy & immunology (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Sherry Farzan, M.D. writes more Part D claims than 18% of them and scores higher on MIPS quality than 72% - 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 allergy & immunology (internal medicine) physician peer from a representative sample of 60; the gold marker is Sherry Farzan, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Sherry Farzan, 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 Sherry Farzan, M.D.?
High performer (top quartile)Primary specialty
Allergy & Immunology (Internal Medicine) Physician
Medicare Part D claims
108 86% vs specialty avg
MIPS final score
91.3/100 8.2 pts vs avg
Specialty distribution in New York
How Allergy & Immunology (Internal Medicine) Physician compares to other specialties among New York providers
Medicare quality performance, MIPS
Sherry Farzan, M.D.'s 2023 MIPS final score plotted against the Allergy & Immunology (Internal Medicine) Physician national average
- MIPS Final Score
- 91.3/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Allergy & Immunology (Internal Medicine) Physician) - 91.3/100 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).
Sherry Farzan, M.D. appears in the CMS NPPES registry as an Allergy & Immunology (Internal Medicine) Physician provider holding M.D. credentials at 865 NORTHERN BLVD, Great Neck, NY, 11021, with a listed phone of (516) 817-1420. NPI 1902082431 was issued on 01/15/2008.
Medicare Part D records for calendar year 2023 show 108 prescription claims written by this provider, covering 17 Medicare beneficiaries and totaling roughly $19K in drug spend, split 26% brand-name and 74% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 91.3/100 for the 2023 performance year (Quality 74.9), compared with the national average of 83.1.
Allergy & Immunology (Internal Medicine) Physician is a narrow specialty nationwide, with 517 enrolled providers across 47 states and an average of 798 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 | 1902082431 |
|---|---|
| Specialty | Allergy & Immunology (Internal Medicine) Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 01/15/2008 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
91.2532
Final Score
Avg: 83.1
74.9203
Quality
91.6794
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Sherry Farzan, 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.
North Shore-Lij Medical PC
Forest Hills, NY
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 Sherry Farzan, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$235
Largest payer
Amgen 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 Sherry Farzan, M.D.. To verify Sherry Farzan, 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 · Above average
Sherry Farzan, M.D. - brand share 26.0%
Allergy & Immunology (Internal Medicine) Physician average
26% brand-name claims vs 74% generic, on 108 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.
108
Total Claims
$19K
Total Drug Cost
17
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 188
- Total Day Supply
- 5,483
- Brand vs Generic
- 26% brand / 74% generic
- Brand Drug Cost
- $15K
- Generic Drug Cost
- $3K
Patient Demographics
- Average Patient Age
- 71.1 years
- Avg HCC Risk Score
- 0.81
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Azelastine Hcl | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Allergy & Immunology (Internal Medicine) Physician in NY →
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Compare specialties →
Allergy & Immunology (Internal Medicine) Physician Overview
How Sherry Farzan, M.D. fits within the Allergy & Immunology (Internal Medicine) Physician landscape nationally.
517
Allergy & Immunology (Internal Medicine) Physician Providers in US
47
States with Allergy & Immunology (Internal Medicine) Physician
798
Avg Claims per Provider
Sherry Farzan, M.D.'s 108 claims are below the specialty average of 798.
Nearby Allergy & Immunology (Internal Medicine) Physician Providers in New York
Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as Farzan.
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 Allergy & Immunology (Internal Medicine) 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 Sherry Farzan, M.D.'s specialty? ▼
Sherry Farzan, M.D. specializes in Allergy & Immunology (Internal Medicine) Physician and practices in Great Neck, New York. Credentials: M.D..
How much does Sherry Farzan, M.D. prescribe under Medicare Part D? ▼
In 2023, Sherry Farzan, M.D. wrote 108 Medicare Part D claims totaling $19K in drug costs for 17 beneficiaries.
What is Sherry Farzan, M.D.'s Medicare quality score? ▼
Sherry Farzan, M.D. has a CMS MIPS Final Score of 91.3/100 (Quality: 74.9). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Sherry Farzan, M.D. located? ▼
Sherry Farzan, M.D. is located at 865 NORTHERN BLVD, Great Neck, NY, 11021. Phone: (516) 817-1420.
What is Sherry Farzan, M.D.'s NPI number? ▼
Sherry Farzan, M.D.'s National Provider Identifier (NPI) is 1902082431, issued on 01/15/2008.
Does Sherry Farzan, M.D. prescribe more brand-name or generic drugs? ▼
Sherry Farzan, M.D.'s prescribing is 26% brand-name and 74% generic drugs by claim count, with $15K in brand drug costs.
How many Allergy & Immunology (Internal Medicine) Physician providers are there in the US? ▼
There are 517 Allergy & Immunology (Internal Medicine) Physician providers across 47 states in the US. The average Allergy & Immunology (Internal Medicine) Physician provider writes 798 Medicare Part D claims per year.
What drugs does Sherry Farzan, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Sherry Farzan, M.D.'s most frequently prescribed drugs include Azelastine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Sherry Farzan, M.D. accept Medicare? ▼
Sherry Farzan, M.D. appears in CMS Medicare data with 108 Part D claims and 17 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Sherry Farzan, M.D.'s credentials? ▼
Sherry Farzan, M.D.'s NPI is 1902082431 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.