NPI registry status
Active
2026 NPPES data Rheumatology Physician NPI 1841649423 MD
Verify on CMS → Emma Weeding, MD
Rheumatology Physician in Crofton, 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 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
265
Medicare Part D claims · 59 beneficiaries · Rheumatology Physician avg: 2K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$136.99
6 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
Emma Weeding, MD filed 265 Medicare Part D claims in 2023 as a Rheumatology Physician in Crofton, Maryland, prescribing 88% generic.
- 265
- Part D claims, 2023
- 88%
- generic prescribing
- $136.99
- industry payments (Sunshine Act)
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.
Emma Weeding, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
265 49th percentile higher than 49% 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-eligible specialty (heuristic, not verified)
Emma Weeding, MD 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 Emma Weeding, MD?
Quality data not reportedPrimary specialty
Rheumatology Physician
Medicare Part D claims
265 87% vs specialty avg
Specialty distribution in Maryland
How Rheumatology 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 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).
Emma Weeding, MD appears in the CMS NPPES registry as a Rheumatology Physician provider holding MD credentials at 1655 CROFTON BLVD STE 101, Crofton, MD, 21114, with a listed phone of (443) 292-4872. NPI 1841649423 was issued on 06/06/2016.
Medicare Part D records for calendar year 2023 show 265 prescription claims written by this provider, covering 59 Medicare beneficiaries and totaling roughly $305K in drug spend, split 12% brand-name and 88% 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 | 1841649423 |
|---|---|
| Specialty | Rheumatology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 06/06/2016 |
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 Emma Weeding, MD. Source: openpaymentsdata.cms.gov.
Total received
$137
Largest payer
UCB, 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.
Brand vs generic prescribing mix · Typical
Emma Weeding, MD - brand share 12.0%
Rheumatology Physician average
12% brand-name claims vs 88% generic, on 265 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.
265
Total Claims
$305K
Total Drug Cost
59
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 651
- Total Day Supply
- 19,249
- Brand vs Generic
- 12% brand / 88% generic
- Brand Drug Cost
- $291K
- Generic Drug Cost
- $14K
Patient Demographics
- Average Patient Age
- 71.5 years
- Avg HCC Risk Score
- 1.04
- Gender Split
- 75% female / 25% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Emma Weeding, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydroxychloroquine…
Hydroxychloroquine Sulfate
62 claims
- Prednisone
Prednisone
40 claims
- Allopurinol
Allopurinol
39 claims
- Methotrexate
Methotrexate
32 claims
- Colchicine
Colchicine
25 claims
- Humira(Cf) Pen 17
Humira(Cf) Pen
17 claims
- Leflunomide 12
Leflunomide
12 claims
| Drug | Claims |
|---|---|
| Hydroxychloroquine Sulfate | 62 |
| Prednisone | 40 |
| Allopurinol | 39 |
| Methotrexate Methotrexate Sodium | 32 |
| Colchicine | 25 |
| Humira(Cf) Pen Adalimumab | 17 |
| Leflunomide | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Rheumatology Physician Overview
How Emma Weeding, MD 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
Emma Weeding, MD's 265 claims are below the specialty average of 2,054.
Nearby Rheumatology Physician Providers in Maryland
Other clinicians with the same primary specialty enrolled in Maryland, drawn from the same CMS NPPES roster as Weeding.
Dr. Jonathan Adelson
M.D.
Greenbelt, MD
Dr. Naila Ahmad
MD
Easton, MD
Dr. Grace Ahn
M.D.
Rockville, MD
Dr. Maria Alba-Dauhajre
MD
Silver Spring, MD
Dr. Jemima Felicity Albayda
MD
Baltimore, MD
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 Maryland 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 Emma Weeding, MD's specialty? ▼
Emma Weeding, MD specializes in Rheumatology Physician and practices in Crofton, Maryland. Credentials: MD.
How much does Emma Weeding, MD prescribe under Medicare Part D? ▼
In 2023, Emma Weeding, MD wrote 265 Medicare Part D claims totaling $305K in drug costs for 59 beneficiaries.
Where is Emma Weeding, MD located? ▼
Emma Weeding, MD is located at 1655 CROFTON BLVD STE 101, Crofton, MD, 21114. Phone: (443) 292-4872.
What is Emma Weeding, MD's NPI number? ▼
Emma Weeding, MD's National Provider Identifier (NPI) is 1841649423, issued on 06/06/2016.
Does Emma Weeding, MD prescribe more brand-name or generic drugs? ▼
Emma Weeding, MD's prescribing is 12% brand-name and 88% generic drugs by claim count, with $291K 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 Emma Weeding, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Emma Weeding, MD's most frequently prescribed drugs include Hydroxychloroquine Sulfate, Prednisone, Allopurinol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Emma Weeding, MD accept Medicare? ▼
Emma Weeding, MD appears in CMS Medicare data with 265 Part D claims and 59 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Emma Weeding, MD's credentials? ▼
Emma Weeding, MD's NPI is 1841649423 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.
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.