NPI registry status
Active
2026 NPPES data Rheumatology Physician NPI 1649634734 M.D.
Verify on CMS → Amanda Nussdorf, M.D.
Rheumatology Physician in Philadelphia, Pennsylvania.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,200 in Rheumatology 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
991
Medicare Part D claims · 202 beneficiaries · Rheumatology Physician avg: 2K
Generic prescribing
75%
generic claims · 25% 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
Amanda Nussdorf, M.D. filed 991 Medicare Part D claims in 2023 as a Rheumatology Physician in Philadelphia, Pennsylvania, prescribing 75% generic.
- 991
- Part D claims, 2023
- 75%
- 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.
Amanda Nussdorf, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
991 Top 25% higher than 75% 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)
Amanda Nussdorf, M.D. 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 Amanda Nussdorf, M.D.?
Quality data not reportedPrimary specialty
Rheumatology Physician
Medicare Part D claims
991 52% vs specialty avg
Specialty distribution in Pennsylvania
How Rheumatology Physician compares to other specialties among Pennsylvania 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 Rheumatology 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).
Amanda Nussdorf, M.D. appears in the CMS NPPES registry as a Rheumatology Physician provider holding M.D. credentials at 211 S 9TH ST STE 210, Philadelphia, PA, 19107, with a listed phone of (215) 955-8430. NPI 1649634734 was issued on 04/05/2016.
Medicare Part D records for calendar year 2023 show 991 prescription claims written by this provider, covering 202 Medicare beneficiaries and totaling roughly $2.3 million in drug spend, split 25% brand-name and 75% generic by claim count.
Rheumatology Physician is a mid-sized specialty nationwide, with 6,200 enrolled providers across 52 states and an average of 2,054 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 | 1649634734 |
|---|---|
| Specialty | Rheumatology Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 04/05/2016 |
Hospital and facility affiliations
Facilities where Amanda Nussdorf, 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.
Jefferson University Physicians
Philadelphia, 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).
License & disciplinary context - Pennsylvania PA-BOM 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 ~45K Pennsylvania medical licensees in 2023 - they are NOT specific to Amanda Nussdorf, M.D.. To verify Amanda Nussdorf, M.D.'s current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases
PA-BOM 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 Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Above average
Amanda Nussdorf, M.D. - brand share 25.0%
Rheumatology Physician average
25% brand-name claims vs 75% generic, on 991 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.
991
Total Claims
$2.3M
Total Drug Cost
202
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,757
- Total Day Supply
- 50,617
- Brand vs Generic
- 25% brand / 75% generic
- Brand Drug Cost
- $2.2M
- Generic Drug Cost
- $30K
Patient Demographics
- Average Patient Age
- 70.1 years
- Avg HCC Risk Score
- 1.92
- Gender Split
- 73% female / 27% male
- Age Distribution
- <65: 44, 65-74: 94, 75-84: 49, 85+: 15
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Amanda Nussdorf, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydroxychloroquine…
Hydroxychloroquine Sulfate
178 claims
- Methotrexate
Methotrexate
90 claims
- Prednisone
Prednisone
89 claims
- Allopurinol
Allopurinol
84 claims
- Diclofenac Sodium 70
Diclofenac Sodium
70 claims
- Colchicine 52
Colchicine
52 claims
- Humira(Cf) Pen 47
Humira(Cf) Pen
47 claims
- Humira Pen 32
Humira Pen
32 claims
| Drug | Claims |
|---|---|
| Hydroxychloroquine Sulfate | 178 |
| Methotrexate Methotrexate Sodium | 90 |
| Prednisone | 89 |
| Allopurinol | 84 |
| Diclofenac Sodium | 70 |
| Colchicine | 52 |
| Humira(Cf) Pen Adalimumab | 47 |
| Humira Pen Adalimumab | 32 |
| Sulfasalazine | 31 |
| Cosentyx Sensoready Pen Secukinumab | 28 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Rheumatology Physician Overview
How Amanda Nussdorf, M.D. fits within the Rheumatology Physician landscape nationally.
6,200
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider
Amanda Nussdorf, M.D.'s 991 claims are below the specialty average of 2,054.
Nearby Rheumatology Physician Providers in Pennsylvania
Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as Nussdorf.
Dr. Ravi Acharya
M.D.
Gettysburg, PA
Antonio Achkar
Pittsburgh, PA
Dr. Sandhya Adusumilli
M.D.
Lancaster, PA
Dr. Rohit Aggarwal
M.D.
Pittsburgh, PA
Dr. Shirley Albano
MD
Hershey, PA
Compare Rheumatology 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 Pennsylvania medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Rheumatology 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 Amanda Nussdorf, M.D.'s specialty? ▼
Amanda Nussdorf, M.D. specializes in Rheumatology Physician and practices in Philadelphia, Pennsylvania. Credentials: M.D..
How much does Amanda Nussdorf, M.D. prescribe under Medicare Part D? ▼
In 2023, Amanda Nussdorf, M.D. wrote 991 Medicare Part D claims totaling $2.3M in drug costs for 202 beneficiaries.
Where is Amanda Nussdorf, M.D. located? ▼
Amanda Nussdorf, M.D. is located at 211 S 9TH ST STE 210, Philadelphia, PA, 19107. Phone: (215) 955-8430.
What is Amanda Nussdorf, M.D.'s NPI number? ▼
Amanda Nussdorf, M.D.'s National Provider Identifier (NPI) is 1649634734, issued on 04/05/2016.
Does Amanda Nussdorf, M.D. prescribe more brand-name or generic drugs? ▼
Amanda Nussdorf, M.D.'s prescribing is 25% brand-name and 75% generic drugs by claim count, with $2.2M in brand drug costs.
How many Rheumatology Physician providers are there in the US? ▼
There are 6,200 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
What drugs does Amanda Nussdorf, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Amanda Nussdorf, M.D.'s most frequently prescribed drugs include Hydroxychloroquine Sulfate, Methotrexate, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Amanda Nussdorf, M.D. accept Medicare? ▼
Amanda Nussdorf, M.D. appears in CMS Medicare data with 991 Part D claims and 202 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Amanda Nussdorf, M.D.'s credentials? ▼
Amanda Nussdorf, M.D.'s NPI is 1649634734 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.
- 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.