NPI registry status
Active
2026 NPPES data Rheumatology Physician NPI 1508086083 MD
Verify on CMS → Edward Fels, MD
Rheumatology Physician in Portland, Maine.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,181 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
3K
Medicare Part D claims · 449 beneficiaries · Rheumatology Physician avg: 2K
MIPS score
98.1/100
▲ 15 pts above national avg 83.1 · Exceptional
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Edward Fels, MD reported a CMS MIPS final score of 98.1/100 - above the 83.1 national average - and filed 2,604 Medicare Part D claims in 2023.
- 98.1/100
- MIPS score · +15 vs avg
- 3K
- Part D claims, 2023
- 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.
Edward Fels, MD's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
98 Top 11% higher than 89% 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 Edward Fels, MD sits
This provider among rheumatology physician peers
Across the 2,181 rheumatology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Edward Fels, MD writes more Part D claims than 65% of them and scores higher on MIPS quality than 90% - placing this provider in the high-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 rheumatology physician peer from a representative sample of 60; the gold marker is Edward Fels, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Edward Fels, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations - 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 Edward Fels, MD?
High performer (top quartile)Primary specialty
Rheumatology Physician
Medicare Part D claims
2,604 27% vs specialty avg
MIPS final score
98.1/100 15 pts vs avg
Specialty distribution in Maine
How Rheumatology Physician compares to other specialties among Maine providers
Medicare quality performance, MIPS
Edward Fels, MD's 2023 MIPS final score plotted against the Rheumatology Physician national average
- MIPS Final Score
- 98.1/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Rheumatology Physician) - 98.1/100 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).
Edward Fels, MD appears in the CMS NPPES registry as a Rheumatology Physician provider holding MD credentials at 51 SEWALL ST, Portland, ME, 04102, with a listed phone of (207) 774-5761. NPI 1508086083 was issued on 04/26/2007.
Medicare Part D records for calendar year 2023 show 2,604 prescription claims written by this provider, covering 449 Medicare beneficiaries and totaling roughly $2.5 million in drug spend, with an opioid prescribing rate of 10.8%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 98.1/100 for the 2023 performance year (Quality 86.1), compared with the national average of 83.1.
Rheumatology Physician is a mid-sized specialty nationwide, with 6,181 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 | 1508086083 |
|---|---|
| Specialty | Rheumatology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 04/26/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
98.0699
Final Score
Avg: 83.1
86.1398
Quality
100
Promoting Interoperability
Reporting: Alternative Payment Model
Hospital and facility affiliations
Facilities where Edward Fels, 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.
York Hospital
★★★★☆ 4/5
York, ME
Acute Care Hospitals
CMS CCN: 200020
Rheumatology Associates P.A.
Portland, ME
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
2,604
Total Claims
$2.5M
Total Drug Cost
449
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,576
- Total Day Supply
- 162,653
- Generic Drug Cost
- $121K
- Opioid Claims
- 282 (10.8% rate)
Patient Demographics
- Average Patient Age
- 71.3 years
- Avg HCC Risk Score
- 1.61
- Gender Split
- 69% female / 31% male
- Age Distribution
- <65: 78, 65-74: 195, 75-84: 138, 85+: 38
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Edward Fels, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Prednisone
Prednisone
429 claims
- Methotrexate
Methotrexate
426 claims
- Hydroxychloroquine…
Hydroxychloroquine Sulfate
332 claims
- Leflunomide 128
Leflunomide
128 claims
- Allopurinol 113
Allopurinol
113 claims
- Oxycodone Hcl 97
Oxycodone Hcl
97 claims
- Hydrocodone-Acetam… 79
Hydrocodone-Acetaminophen
79 claims
- Tramadol Hcl 79
Tramadol Hcl
79 claims
| Drug | Claims |
|---|---|
| Prednisone | 429 |
| Methotrexate Methotrexate Sodium | 426 |
| Hydroxychloroquine Sulfate | 332 |
| Leflunomide | 128 |
| Allopurinol | 113 |
| Oxycodone Hcl | 97 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 79 |
| Tramadol Hcl | 79 |
| Methylprednisolone | 72 |
| Colchicine | 58 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Rheumatology Physician Overview
How Edward Fels, MD fits within the Rheumatology Physician landscape nationally.
6,181
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider
Edward Fels, MD's 2,604 claims are above the specialty average of 2,054.
Nearby Rheumatology Physician Providers in Maine
Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as Fels.
Dr. Nancy-Nichole Barry
MD
Belfast, ME
Dr. Sidney Block
MD
Bangor, ME
Dr. Kenneth Calamia
MD
Belfast, ME
Saskia Cooper
Bath, ME
Dr. Courtney Corbeil
DO
Bangor, ME
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 Maine 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.
Healthcare Guides
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
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How insurance networks affect your costs
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Explore Maine
Frequently Asked Questions
What is Edward Fels, MD's specialty? ▼
Edward Fels, MD specializes in Rheumatology Physician and practices in Portland, Maine. Credentials: MD.
How much does Edward Fels, MD prescribe under Medicare Part D? ▼
In 2023, Edward Fels, MD wrote 2,604 Medicare Part D claims totaling $2.5M in drug costs for 449 beneficiaries.
What is Edward Fels, MD's Medicare quality score? ▼
Edward Fels, MD has a CMS MIPS Final Score of 98.1/100 (Quality: 86.1). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Edward Fels, MD located? ▼
Edward Fels, MD is located at 51 SEWALL ST, Portland, ME, 04102. Phone: (207) 774-5761.
What is Edward Fels, MD's NPI number? ▼
Edward Fels, MD's National Provider Identifier (NPI) is 1508086083, issued on 04/26/2007.
Does Edward Fels, MD prescribe opioids? ▼
Yes, Edward Fels, MD had 282 opioid claims in 2023 with an opioid prescribing rate of 10.8%.
How many Rheumatology Physician providers are there in the US? ▼
There are 6,181 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 Edward Fels, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Edward Fels, MD's most frequently prescribed drugs include Prednisone, Methotrexate, Hydroxychloroquine Sulfate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Edward Fels, MD accept Medicare? ▼
Edward Fels, MD appears in CMS Medicare data with 2,604 Part D claims and 449 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Edward Fels, MD's credentials? ▼
Edward Fels, MD's NPI is 1508086083 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.
- 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.