NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1831127091 D.O.
Verify on CMS → Jeffrey Freeman, D.O.
Endocrinology, Diabetes & Metabolism 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 7,852 in Endocrinology, Diabetes & Metabolism 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
6K
Medicare Part D claims · 708 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
48%
generic claims · 45% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$9.8K
160 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
Jeffrey Freeman, D.O. filed 6,153 Medicare Part D claims in 2023 as a Endocrinology, Diabetes & Metabolism Physician in Philadelphia, Pennsylvania, prescribing 48% generic.
- 6K
- Part D claims, 2023
- 48%
- 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.
Jeffrey Freeman, D.O.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
6,153 Top 5% higher than 95% 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)
Jeffrey Freeman, D.O. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 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 Jeffrey Freeman, D.O.?
Quality data not reportedPrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
6,153 133% vs specialty avg
Specialty distribution in Pennsylvania
How Endocrinology, Diabetes & Metabolism 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 Endocrinology, Diabetes & Metabolism 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).
Jeffrey Freeman, D.O. appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding D.O. credentials at 4190 CITY AVE, Philadelphia, PA, 19131, with a listed phone of (215) 871-1916. NPI 1831127091 was issued on 06/28/2006.
Medicare Part D records for calendar year 2023 show 6,153 prescription claims written by this provider, covering 708 Medicare beneficiaries and totaling roughly $3.0 million in drug spend, split 45% brand-name and 48% generic by claim count.
Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 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 | 1831127091 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | D.O. |
| Gender | Male |
| NPI Issued | 06/28/2006 |
Hospital and facility affiliations
Facilities where Jeffrey Freeman, D.O. 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.
According to CMS billing records, Jeffrey Freeman, D.O. is affiliated with 3 Medicare-billing facilities across 2 states.
Christiana Care Health Services Inc
Wilmington, DE
Christiana Care Pennsylvania Inc
Chadds Ford, PA
Prospect Health Access Network Inc
Springfield, 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).
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 Jeffrey Freeman, D.O.. Source: openpaymentsdata.cms.gov.
Total received
$9.8K
Largest payer
Novo Nordisk 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 - 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 Jeffrey Freeman, D.O.. To verify Jeffrey Freeman, D.O.'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
Jeffrey Freeman, D.O. - brand share 45.0%
Endocrinology, Diabetes & Metabolism Physician average
45% brand-name claims vs 48% generic, on 6,153 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.
6,153
Total Claims
$3.0M
Total Drug Cost
708
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 13,657
- Total Day Supply
- 405,341
- Brand vs Generic
- 45% brand / 48% generic
- Brand Drug Cost
- $2.7M
- Generic Drug Cost
- $98K
Patient Demographics
- Average Patient Age
- 70.5 years
- Avg HCC Risk Score
- 1.63
- Gender Split
- 54% female / 46% male
- Age Distribution
- <65: 132, 65-74: 334, 75-84: 199, 85+: 43
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Jeffrey Freeman, D.O. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
686 claims
- Metformin Hcl
Metformin Hcl
292 claims
- Atorvastatin Calcium 268
Atorvastatin Calcium
268 claims
- Methimazole 207
Methimazole
207 claims
- Ozempic 184
Ozempic
184 claims
- Jardiance 180
Jardiance
180 claims
- Synthroid 162
Synthroid
162 claims
- Novolog Flexpen 152
Novolog Flexpen
152 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 686 |
| Metformin Hcl | 292 |
| Atorvastatin Calcium | 268 |
| Methimazole | 207 |
| Ozempic Semaglutide | 184 |
| Jardiance Empagliflozin | 180 |
| Synthroid Levothyroxine Sodium | 162 |
| Novolog Flexpen Insulin Aspart | 152 |
| Glipizide | 150 |
| Ezetimibe | 141 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Endocrinology, Diabetes & Metabolism Physician in PA →
All providers in Pennsylvania →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Jeffrey Freeman, D.O. fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider
Jeffrey Freeman, D.O.'s 6,153 claims are above the specialty average of 2,639.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Pennsylvania
Other clinicians with the same primary specialty enrolled in Pennsylvania, drawn from the same CMS NPPES roster as Freeman.
Dr. Munira Abbasi
MD
Pittsburgh, PA
Dr. Jana Abraham
MD
Berwyn, PA
Dr. Rachel Abramczyk
DO
Parkesburg, PA
Dr. Michael Adler
M.D.
Lewisburg, PA
Shivani Agarwal
Philadelphia, PA
Compare Endocrinology, Diabetes & Metabolism 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 Endocrinology, Diabetes & Metabolism 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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Medical Specialties Explained
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Frequently Asked Questions
What is Jeffrey Freeman, D.O.'s specialty? ▼
Jeffrey Freeman, D.O. specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Philadelphia, Pennsylvania. Credentials: D.O..
How much does Jeffrey Freeman, D.O. prescribe under Medicare Part D? ▼
In 2023, Jeffrey Freeman, D.O. wrote 6,153 Medicare Part D claims totaling $3.0M in drug costs for 708 beneficiaries.
Where is Jeffrey Freeman, D.O. located? ▼
Jeffrey Freeman, D.O. is located at 4190 CITY AVE, Philadelphia, PA, 19131. Phone: (215) 871-1916.
What is Jeffrey Freeman, D.O.'s NPI number? ▼
Jeffrey Freeman, D.O.'s National Provider Identifier (NPI) is 1831127091, issued on 06/28/2006.
Does Jeffrey Freeman, D.O. prescribe more brand-name or generic drugs? ▼
Jeffrey Freeman, D.O.'s prescribing is 45% brand-name and 48% generic drugs by claim count, with $2.7M in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 7,852 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does Jeffrey Freeman, D.O. prescribe most often? ▼
Based on 2023 Medicare Part D data, Jeffrey Freeman, D.O.'s most frequently prescribed drugs include Levothyroxine Sodium, Metformin Hcl, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jeffrey Freeman, D.O. accept Medicare? ▼
Jeffrey Freeman, D.O. appears in CMS Medicare data with 6,153 Part D claims and 708 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jeffrey Freeman, D.O.'s credentials? ▼
Jeffrey Freeman, D.O.'s NPI is 1831127091 with credentials D.O.. 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.