NPI registry status
Active
2026 NPPES data General Practice Physician NPI 1194346155
Verify on CMS → Derek Lehman
General Practice Physician in Oklahoma City, Oklahoma.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,838 in General Practice 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
329
Medicare Part D claims · 68 beneficiaries · General Practice Physician avg: 3K
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Derek Lehman filed 329 Medicare Part D claims in 2024 as a General Practice Physician in Oklahoma City, Oklahoma, prescribing 96% generic.
- 329
- Part D claims, 2024
- 96%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥56th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Derek Lehman
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1194346155), first enumerated 04/30/2020.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 329 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1194346155 · General Practice Physician
NPI-10 · ENUM-RECENT · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1194346155
- ENUM-RECENT 2020
- TAX-MID 17K General Practice
- RX-LIGHT 329
- BOOK-THIN 125 in Oklahoma
- PHOTO-ENUM Chukwuemeka Igwe · 2020
Derek Lehman's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
329 ≥ 56th percentile 56% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Derek Lehman practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - 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 Derek Lehman?
Quality data not reportedPrimary specialty
General Practice Physician
Medicare Part D claims
329 89% vs specialty avg
Specialty distribution in Oklahoma
How General Practice Physician compares to other specialties among Oklahoma 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 General Practice 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).
Practice Address
Provider Details
| NPI | 1194346155 |
|---|---|
| Specialty | General Practice Physician |
| Gender | Male |
| NPI Issued | 04/30/2020 |
Hospital and facility affiliations
Facilities where Derek Lehman 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.
OU Health Partners Inc
Oklahoma City, OK
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Generic-heavy
Derek Lehman - brand share 4.0%
General Practice Physician average
4% brand-name claims vs 96% generic, on 329 2024 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 2024.
329
Total Claims
$28K
Total Drug Cost
68
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 419.067
- Total Day Supply
- 12,055
- Brand vs Generic
- 4% brand / 96% generic
- Brand Drug Cost
- $21K
- Generic Drug Cost
- $7K
Patient Demographics
- Average Patient Age
- 62.1 years
- Avg HCC Risk Score
- 1.66
- Gender Split
- 68% female / 32% male
- Age Distribution
- <65: 33, 65-74: 21, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Derek Lehman prescribes most
Top Medicare Part D drugs by claim count, 2024
- Bupropion Xl
Bupropion Xl
28 claims
- Escitalopram Oxalate
Escitalopram Oxalate
27 claims
- Sertraline Hcl
Sertraline Hcl
26 claims
- Hydroxyzine Hcl
Hydroxyzine Hcl
20 claims
- Buspirone Hcl
Buspirone Hcl
17 claims
- Duloxetine Hcl
Duloxetine Hcl
17 claims
- Mirtazapine
Mirtazapine
16 claims
- Aripiprazole
Aripiprazole
15 claims
| Drug | Claims |
|---|---|
| Bupropion Xl Bupropion Hcl | 28 |
| Escitalopram Oxalate | 27 |
| Sertraline Hcl | 26 |
| Hydroxyzine Hcl | 20 |
| Buspirone Hcl | 17 |
| Duloxetine Hcl | 17 |
| Mirtazapine | 16 |
| Aripiprazole | 15 |
| Quetiapine Fumarate | 15 |
| Olanzapine | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
General Practice Physician Overview
How Derek Lehman fits within the General Practice Physician landscape nationally.
16,838
General Practice Physician Providers in US
56
States with General Practice Physician
2,957
Avg Claims per Provider
Derek Lehman's 329 claims are below the specialty average of 2,957.
Nationwide General Practice Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Lehman, both outside Oklahoma so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2020)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby General Practice Physician Providers in Oklahoma
Other clinicians with the same primary specialty enrolled in Oklahoma, drawn from the same CMS NPPES roster as Lehman.
One of 125 General Practice Physician providers enrolled in Oklahoma, 5 are shown here.
Dr. Solomon Ali
M.D.
Fairview, OK
Dr. Julian Anderson
MD
Norman, OK
Dr. Andrew Bailey
M.D.
Oklahoma City, OK
Dr. Yakiji Bailey
D.O.
Tulsa, OK
Dr. Savneet Basati
DDS
Oklahoma City, OK
Compare General Practice Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Derek Lehman's specialty? ▼
Derek Lehman specializes in General Practice Physician and practices in Oklahoma City, Oklahoma.
How much does Derek Lehman prescribe under Medicare Part D? ▼
In 2024, Derek Lehman wrote 329 Medicare Part D claims totaling $28K in drug costs for 68 beneficiaries.
Where is Derek Lehman located? ▼
Derek Lehman is located at 920 STANTON L YOUNG BLVD # WP3440, Oklahoma City, OK, 73104. Phone: (405) 271-5251.
What is Derek Lehman's NPI number? ▼
Derek Lehman's National Provider Identifier (NPI) is 1194346155, issued on 04/30/2020.
Does Derek Lehman prescribe more brand-name or generic drugs? ▼
Derek Lehman's prescribing is 4% brand-name and 96% generic drugs by claim count, with $21K in brand drug costs.
How many General Practice Physician providers are there in the US? ▼
There are 16,838 General Practice Physician providers across 56 states in the US. The average General Practice Physician provider writes 2,957 Medicare Part D claims per year.
What drugs does Derek Lehman prescribe most often? ▼
Based on 2024 Medicare Part D data, Derek Lehman's most frequently prescribed drugs include Bupropion Xl, Escitalopram Oxalate, Sertraline Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Derek Lehman accept Medicare? ▼
Derek Lehman appears in CMS Medicare data with 329 Part D claims and 68 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Derek Lehman's credentials? ▼
Derek Lehman's NPI is 1194346155. 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 (2024). 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 August 2026 (NPPES) / 2024 (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
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 August 2026.