NPI registry status
Active
2026 NPPES data Obstetrics Physician NPI 1326364381 M.D.
Verify on CMS → Oscar Martinez, M.D.
Obstetrics Physician in Tahoka, Texas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,396 in Obstetrics 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
2K
Medicare Part D claims · 248 beneficiaries · Obstetrics Physician avg: 319
Generic prescribing
76%
generic claims · 22% 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
Oscar Martinez, M.D. filed 1,650 Medicare Part D claims in 2023 as a Obstetrics Physician in Tahoka, Texas, prescribing 76% generic.
- 2K
- Part D claims, 2023
- 76%
- 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.
Oscar Martinez, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,650 Top 18% higher than 82% 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)
Oscar Martinez, 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 Oscar Martinez, M.D.?
Quality data not reportedPrimary specialty
Obstetrics Physician
Medicare Part D claims
1,650 5× vs specialty avg
Specialty distribution in Texas
How Obstetrics Physician compares to other specialties among Texas 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 Obstetrics 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).
Oscar Martinez, M.D. appears in the CMS NPPES registry as an Obstetrics Physician provider holding M.D. credentials at 2600 LOCKWOOD ST, Tahoka, TX, 79373, with a listed phone of (806) 998-4533. NPI 1326364381 was issued on 04/15/2010.
Medicare Part D records for calendar year 2023 show 1,650 prescription claims written by this provider, covering 248 Medicare beneficiaries and totaling roughly $380K in drug spend, split 22% brand-name and 76% generic by claim count, with an opioid prescribing rate of 0.8%.
Obstetrics Physician is a narrow specialty nationwide, with 1,396 enrolled providers across 54 states and an average of 319 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 | 1326364381 |
|---|---|
| Specialty | Obstetrics Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 04/15/2010 |
License & disciplinary context - Texas TMB 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 ~77K Texas medical licensees in 2023 - they are NOT specific to Oscar Martinez, M.D.. To verify Oscar Martinez, M.D.'s current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases
TMB 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 Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Oscar Martinez, M.D. - brand share 22.0%
Obstetrics Physician average
22% brand-name claims vs 76% generic, on 1,650 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.
1,650
Total Claims
$380K
Total Drug Cost
248
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,949
- Total Day Supply
- 84,097
- Brand vs Generic
- 22% brand / 76% generic
- Brand Drug Cost
- $348K
- Generic Drug Cost
- $19K
- Opioid Claims
- 13 (0.8% rate)
- Antibiotic Claims
- 59
Patient Demographics
- Average Patient Age
- 73.7 years
- Avg HCC Risk Score
- 1.38
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 23, 65-74: 109, 75-84: 86, 85+: 30
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Oscar Martinez, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Lisinopril
Lisinopril
89 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
87 claims
- Levothyroxine Sodium
Levothyroxine Sodium
80 claims
- Ozempic
Ozempic
61 claims
- Atorvastatin Calcium
Atorvastatin Calcium
57 claims
- Metformin Hcl Er
Metformin Hcl Er
44 claims
- Duloxetine Hcl
Duloxetine Hcl
43 claims
- Amlodipine Besylate
Amlodipine Besylate
41 claims
| Drug | Claims |
|---|---|
| Lisinopril | 89 |
| Rosuvastatin Calcium | 87 |
| Levothyroxine Sodium | 80 |
| Ozempic Semaglutide | 61 |
| Atorvastatin Calcium | 57 |
| Metformin Hcl Er Metformin Hcl | 44 |
| Duloxetine Hcl | 43 |
| Amlodipine Besylate | 41 |
| Gabapentin | 41 |
| Mounjaro Tirzepatide | 40 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Obstetrics Physician Overview
How Oscar Martinez, M.D. fits within the Obstetrics Physician landscape nationally.
1,396
Obstetrics Physician Providers in US
54
States with Obstetrics Physician
319
Avg Claims per Provider
Oscar Martinez, M.D.'s 1,650 claims are above the specialty average of 319.
Nearby Obstetrics Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Martinez.
Dr. Mazin Al Saleh
MD
Katy, TX
Dr. Amira Alkhatib
DO
Beaumont, TX
Dr. Brittney Anders
M.D.
Dallas, TX
Dr. Marquita Anderson
M.D.
Mansfield, TX
Dr. Julia Armstrong
MD
Corpus Christi, TX
Compare Obstetrics 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 Texas medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Obstetrics 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 Oscar Martinez, M.D.'s specialty? ▼
Oscar Martinez, M.D. specializes in Obstetrics Physician and practices in Tahoka, Texas. Credentials: M.D..
How much does Oscar Martinez, M.D. prescribe under Medicare Part D? ▼
In 2023, Oscar Martinez, M.D. wrote 1,650 Medicare Part D claims totaling $380K in drug costs for 248 beneficiaries.
Where is Oscar Martinez, M.D. located? ▼
Oscar Martinez, M.D. is located at 2600 LOCKWOOD ST, Tahoka, TX, 79373. Phone: (806) 998-4533.
What is Oscar Martinez, M.D.'s NPI number? ▼
Oscar Martinez, M.D.'s National Provider Identifier (NPI) is 1326364381, issued on 04/15/2010.
Does Oscar Martinez, M.D. prescribe more brand-name or generic drugs? ▼
Oscar Martinez, M.D.'s prescribing is 22% brand-name and 76% generic drugs by claim count, with $348K in brand drug costs.
Does Oscar Martinez, M.D. prescribe opioids? ▼
Yes, Oscar Martinez, M.D. had 13 opioid claims in 2023 with an opioid prescribing rate of 0.8%.
How many Obstetrics Physician providers are there in the US? ▼
There are 1,396 Obstetrics Physician providers across 54 states in the US. The average Obstetrics Physician provider writes 319 Medicare Part D claims per year.
What drugs does Oscar Martinez, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Oscar Martinez, M.D.'s most frequently prescribed drugs include Lisinopril, Rosuvastatin Calcium, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Oscar Martinez, M.D. accept Medicare? ▼
Oscar Martinez, M.D. appears in CMS Medicare data with 1,650 Part D claims and 248 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Oscar Martinez, M.D.'s credentials? ▼
Oscar Martinez, M.D.'s NPI is 1326364381 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.