NPI registry status
Active
2026 NPPES data Obesity Medicine (Family Medicine) Physician NPI 1457539082 M.D.
Verify on CMS → John Tennis, M.D.
Obesity Medicine (Family Medicine) Physician in Greenwood, South Carolina.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 149 in Obesity Medicine (Family Medicine) 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
31
Medicare Part D claims · Obesity Medicine (Family Medicine) Physician avg: 1K
Generic prescribing
0%
generic claims · 100% 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
John Tennis, M.D. filed 31 Medicare Part D claims in 2023 as a Obesity Medicine (Family Medicine) Physician in Greenwood, South Carolina, prescribing 0% generic.
- 31
- Part D claims, 2023
- 0%
- generic prescribing
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.
John Tennis, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
31 0th percentile higher than 0% 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)
John Tennis, M.D. 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 John Tennis, M.D.?
Quality data not reportedPrimary specialty
Obesity Medicine (Family Medicine) Physician
Medicare Part D claims
31 97% vs specialty avg
Specialty distribution in South Carolina
How Obesity Medicine (Family Medicine) Physician compares to other specialties among South Carolina 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 Obesity Medicine (Family Medicine) 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).
John Tennis, M.D. appears in the CMS NPPES registry as an Obesity Medicine (Family Medicine) Physician provider holding M.D. credentials at 1027A EDGEFIELD ST, Greenwood, SC, 29646, with a listed phone of (864) 227-9708. NPI 1457539082 was issued on 02/06/2008.
Medicare Part D records for calendar year 2023 show 31 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $32K in drug spend, split 100% brand-name and 0% generic by claim count.
Obesity Medicine (Family Medicine) Physician is a narrow specialty nationwide, with 149 enrolled providers across 39 states and an average of 1,239 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 | 1457539082 |
|---|---|
| Specialty | Obesity Medicine (Family Medicine) Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 02/06/2008 |
Brand vs generic prescribing mix · Brand-heavy
John Tennis, M.D. - brand share 100.0%
Obesity Medicine (Family Medicine) Physician average
100% brand-name claims vs 0% generic, on 31 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.
31
Total Claims
$32K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 31
- Total Day Supply
- 896
- Brand vs Generic
- 100% brand / 0% generic
- Brand Drug Cost
- $32K
- Generic Drug Cost
- $0
Patient Demographics
- Average Patient Age
- 66.0 years
- Avg HCC Risk Score
- 0.64
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Ozempic Semaglutide | 25 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Obesity Medicine (Family Medicine) Physician in SC →
All providers in South Carolina →
Compare specialties →
Obesity Medicine (Family Medicine) Physician Overview
How John Tennis, M.D. fits within the Obesity Medicine (Family Medicine) Physician landscape nationally.
149
Obesity Medicine (Family Medicine) Physician Providers in US
39
States with Obesity Medicine (Family Medicine) Physician
1,239
Avg Claims per Provider
John Tennis, M.D.'s 31 claims are below the specialty average of 1,239.
Nearby Obesity Medicine (Family Medicine) Physician Providers in South Carolina
Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as Tennis.
Compare Obesity Medicine (Family Medicine) 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 South Carolina medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Obesity Medicine (Family Medicine) 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
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
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Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore South Carolina
Frequently Asked Questions
What is John Tennis, M.D.'s specialty? ▼
John Tennis, M.D. specializes in Obesity Medicine (Family Medicine) Physician and practices in Greenwood, South Carolina. Credentials: M.D..
How much does John Tennis, M.D. prescribe under Medicare Part D? ▼
In 2023, John Tennis, M.D. wrote 31 Medicare Part D claims totaling $32K in drug costs for N/A beneficiaries.
Where is John Tennis, M.D. located? ▼
John Tennis, M.D. is located at 1027A EDGEFIELD ST, Greenwood, SC, 29646. Phone: (864) 227-9708.
What is John Tennis, M.D.'s NPI number? ▼
John Tennis, M.D.'s National Provider Identifier (NPI) is 1457539082, issued on 02/06/2008.
Does John Tennis, M.D. prescribe more brand-name or generic drugs? ▼
John Tennis, M.D.'s prescribing is 100% brand-name and 0% generic drugs by claim count, with $32K in brand drug costs.
How many Obesity Medicine (Family Medicine) Physician providers are there in the US? ▼
There are 149 Obesity Medicine (Family Medicine) Physician providers across 39 states in the US. The average Obesity Medicine (Family Medicine) Physician provider writes 1,239 Medicare Part D claims per year.
What drugs does John Tennis, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, John Tennis, M.D.'s most frequently prescribed drugs include Ozempic. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does John Tennis, M.D. accept Medicare? ▼
John Tennis, M.D. appears in CMS Medicare data with 31 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Tennis, M.D.'s credentials? ▼
John Tennis, M.D.'s NPI is 1457539082 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.