WILLIAM LOCKE, MD
Obstetrics & Gynecology Physician in STARKVILLE, Mississippi. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.
What the federal data shows
WILLIAM LOCKE, MD filed 506 Medicare Part D claims in 2023 as a Obstetrics & Gynecology Physician in STARKVILLE, Mississippi, prescribing 90% generic.
- 506
- Part D claims, 2023
- 90%
- generic prescribing
- $105.03
- 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.
WILLIAM LOCKE, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023 — across all CMS prescribers nationally
506 Top 34% higher than 66% 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
WILLIAM LOCKE, MD 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 WILLIAM LOCKE, MD?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in Mississippi
How Obstetrics & Gynecology Physician compares to other specialties among Mississippi providers
Obstetrics & Gynecology Physician share within Mississippi
Obstetrics & Gynecology Physician is one of the more visible NUCC categories in Mississippi
Each bar reflects the share of in-state providers whose primary NUCC taxonomy matches the specialty. Long tail of ~690 NUCC codes folded into "Other" to keep the comparison legible.
Specialty board-certification context
Estimated specialty board-certified rate — Obstetrics & Gynecology Physician (ABMS / AOA reference)
- Est. board-certified rate
- 78%
- Obstetrics & Gynecology Physician ABMS/AOA estimate
Est. board-certified rate (Obstetrics & Gynecology Physician) — ABMS / AOA estimate
Verify credentials
- Verify via ABMS free public lookup
- Verify via AOA osteopathic boards
- Specialty volume Obstetrics & Gynecology Physician US NPIs
Specialty board-certified rate — Obstetrics & Gynecology Physician estimate
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus Maintenance of Certification cycles. CMS does not publish a per-provider board-certification field; the figure shown is the specialty-level estimated rate from ABMS / AOA reference data.
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).
WILLIAM LOCKE, MD appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding MD credentials at 100 MEDICAL PARK DRIVE, STARKVILLE, MS, 39759, with a listed phone of (662) 324-4201. NPI 1992886725 was issued on 10/18/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LOCKE most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.
Medicare Part D records for calendar year 2023 show 506 prescription claims written by this provider, covering 114 Medicare beneficiaries and totaling roughly $20K in drug spend, split 10% brand-name and 90% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.
Obstetrics & Gynecology Physician is a mid-sized specialty nationwide, with 44,313 enrolled providers across 56 states and an average of 179 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 | 1992886725 |
|---|---|
| Specialty | Obstetrics & Gynecology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 10/18/2006 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm WILLIAM LOCKE, MD's current license status, disciplinary history, and board certifications with the Mississippi State Board of Medical Licensure in Mississippi before relying on this page for a clinical or care decision.
How we sourced this profile
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 WILLIAM LOCKE, MD. Source: openpaymentsdata.cms.gov.
Total received
$105
Largest payer
Astellas Pharma US 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 · Typical
10% brand-name claims vs 90% generic, on 506 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.
Prescribing Breakdown
- 30-Day Fills
- 905
- Total Day Supply
- 24,814
- Brand vs Generic
- 10% brand / 90% generic
- Brand Drug Cost
- $8K
- Generic Drug Cost
- $12K
- Antibiotic Claims
- 51
Patient Demographics
- Average Patient Age
- 69.7 years
- Avg HCC Risk Score
- 0.94
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What WILLIAM LOCKE, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Estradiol
Estradiol
94 claims
- Clotrimazole-Betam… 31
Clotrimazole-Betamethasone
31 claims
- Fluconazole 30
Fluconazole
30 claims
- Medroxyprogesteron… 29
Medroxyprogesterone Acetate
29 claims
- Zolpidem Tartrate 23
Zolpidem Tartrate
23 claims
- Levothyroxine Sodium 22
Levothyroxine Sodium
22 claims
- Nitrofurantoin Mon… 16
Nitrofurantoin Mono-Macro
16 claims
- Sulfamethoxazole-T… 16
Sulfamethoxazole-Trimethoprim
16 claims
| Drug | Claims |
|---|---|
| Estradiol | 94 |
| Clotrimazole-Betamethasone Clotrimazole/Betamethasone Dip | 31 |
| Fluconazole | 30 |
| Medroxyprogesterone Acetate | 29 |
| Zolpidem Tartrate | 23 |
| Levothyroxine Sodium | 22 |
| Nitrofurantoin Mono-Macro Nitrofurantoin Monohyd/M-Cryst | 16 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 16 |
| Bupropion Xl Bupropion Hcl | 13 |
| Acyclovir | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Obstetrics & Gynecology Physician Overview
How WILLIAM LOCKE, MD fits within the Obstetrics & Gynecology Physician landscape nationally.
WILLIAM LOCKE, MD's 506 claims are above the specialty average of 179.
Nearby Obstetrics & Gynecology Physician Providers in Mississippi
Other clinicians with the same primary specialty enrolled in Mississippi, drawn from the same CMS NPPES roster as LOCKE.
Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →
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Frequently Asked Questions
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Data Sources
- 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