NPI registry status
Active
2026 NPPES data Independent Medical Examiner Physician NPI 1508091281 MD
Verify on CMS → Jonathan Fellers, MD
Independent Medical Examiner 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 219 in Independent Medical Examiner 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
190
Medicare Part D claims · 16 beneficiaries · Independent Medical Examiner Physician avg: 564
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.9K
101 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
Jonathan Fellers, MD filed 190 Medicare Part D claims in 2023 as a Independent Medical Examiner Physician in Portland, Maine, prescribing 92% generic.
- 190
- Part D claims, 2023
- 92%
- generic prescribing
- $1.9K
- 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.
Jonathan Fellers, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
190 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
What does the federal data show about Jonathan Fellers, MD?
Quality data not reportedPrimary specialty
Independent Medical Examiner Physician
Medicare Part D claims
190 66% vs specialty avg
Specialty distribution in Maine
How Independent Medical Examiner Physician compares to other specialties among Maine 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 Independent Medical Examiner 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).
Jonathan Fellers, MD appears in the CMS NPPES registry as a Independent Medical Examiner Physician provider holding MD credentials at 1 CITY CTR STE 8130, Portland, ME, 04101, with a listed phone of (207) 221-0635. NPI 1508091281 was issued on 05/25/2009.
Medicare Part D records for calendar year 2023 show 190 prescription claims written by this provider, covering 16 Medicare beneficiaries and totaling roughly $18K in drug spend, split 8% brand-name and 92% generic by claim count.
Independent Medical Examiner Physician is a narrow specialty nationwide, with 219 enrolled providers across 41 states and an average of 564 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 | 1508091281 |
|---|---|
| Specialty | Independent Medical Examiner Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/25/2009 |
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 Jonathan Fellers, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.9K
Largest payer
ABBVIE 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 · Generic-heavy
Jonathan Fellers, MD - brand share 8.0%
Independent Medical Examiner Physician average
8% brand-name claims vs 92% generic, on 190 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.
190
Total Claims
$18K
Total Drug Cost
16
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 326
- Total Day Supply
- 9,375
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $10K
- Generic Drug Cost
- $9K
Patient Demographics
- Average Patient Age
- 53.8 years
- Avg HCC Risk Score
- 0.92
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Jonathan Fellers, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Escitalopram Oxalate
Escitalopram Oxalate
15 claims
- Clonazepam
Clonazepam
11 claims
- Olanzapine
Olanzapine
11 claims
- Vilazodone Hcl
Vilazodone Hcl
11 claims
| Drug | Claims |
|---|---|
| Escitalopram Oxalate | 15 |
| Clonazepam | 11 |
| Olanzapine | 11 |
| Vilazodone Hcl | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Independent Medical Examiner Physician Overview
How Jonathan Fellers, MD fits within the Independent Medical Examiner Physician landscape nationally.
219
Independent Medical Examiner Physician Providers in US
41
States with Independent Medical Examiner Physician
564
Avg Claims per Provider
Jonathan Fellers, MD's 190 claims are below the specialty average of 564.
Nearby Independent Medical Examiner Physician Providers in Maine
Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as Fellers.
Compare Independent Medical Examiner 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 Independent Medical Examiner 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 Jonathan Fellers, MD's specialty? ▼
Jonathan Fellers, MD specializes in Independent Medical Examiner Physician and practices in Portland, Maine. Credentials: MD.
How much does Jonathan Fellers, MD prescribe under Medicare Part D? ▼
In 2023, Jonathan Fellers, MD wrote 190 Medicare Part D claims totaling $18K in drug costs for 16 beneficiaries.
Where is Jonathan Fellers, MD located? ▼
Jonathan Fellers, MD is located at 1 CITY CTR STE 8130, Portland, ME, 04101. Phone: (207) 221-0635.
What is Jonathan Fellers, MD's NPI number? ▼
Jonathan Fellers, MD's National Provider Identifier (NPI) is 1508091281, issued on 05/25/2009.
Does Jonathan Fellers, MD prescribe more brand-name or generic drugs? ▼
Jonathan Fellers, MD's prescribing is 8% brand-name and 92% generic drugs by claim count, with $10K in brand drug costs.
How many Independent Medical Examiner Physician providers are there in the US? ▼
There are 219 Independent Medical Examiner Physician providers across 41 states in the US. The average Independent Medical Examiner Physician provider writes 564 Medicare Part D claims per year.
What drugs does Jonathan Fellers, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Jonathan Fellers, MD's most frequently prescribed drugs include Escitalopram Oxalate, Clonazepam, Olanzapine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jonathan Fellers, MD accept Medicare? ▼
Jonathan Fellers, MD appears in CMS Medicare data with 190 Part D claims and 16 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jonathan Fellers, MD's credentials? ▼
Jonathan Fellers, MD's NPI is 1508091281 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.