NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Physician NPI 1992886725 MD
Verify on CMS → William Locke, MD
Obstetrics & Gynecology Physician in Starkville, Mississippi.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 44,326 in Obstetrics & Gynecology 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
506
Medicare Part D claims · 114 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$105.03
6 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
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
◑
Board-eligible specialty (heuristic, not verified)
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
Obstetrics & Gynecology Physician
Medicare Part D claims
506 183% vs specialty avg
Specialty distribution in Mississippi
How Obstetrics & Gynecology Physician compares to other specialties among Mississippi 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 & Gynecology 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).
William Locke, MD appears in the CMS NPPES registry as an 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.
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.
Obstetrics & Gynecology Physician is a mid-sized specialty nationwide, with 44,326 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 |
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
William Locke, MD - brand share 10.0%
Obstetrics & Gynecology Physician average
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.
506
Total Claims
$20K
Total Drug Cost
114
Medicare Beneficiaries
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.
44,326
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider
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.
Dr. Joseph Acosta
M.D.
Meridian, MS
Dr. Rashad Ali
M.D.
Laurel, MS
Bailey Anderson
Jackson, MS
Devon Ashley
Jackson, MS
Dr. Nobel Attipoe
MD
Jackson, MS
Compare Obstetrics & Gynecology 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 Mississippi medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Obstetrics & Gynecology 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 William Locke, MD's specialty? ▼
William Locke, MD specializes in Obstetrics & Gynecology Physician and practices in Starkville, Mississippi. Credentials: MD.
How much does William Locke, MD prescribe under Medicare Part D? ▼
In 2023, William Locke, MD wrote 506 Medicare Part D claims totaling $20K in drug costs for 114 beneficiaries.
Where is William Locke, MD located? ▼
William Locke, MD is located at 100 MEDICAL PARK DRIVE, Starkville, MS, 39759. Phone: (662) 324-4201.
What is William Locke, MD's NPI number? ▼
William Locke, MD's National Provider Identifier (NPI) is 1992886725, issued on 10/18/2006.
Does William Locke, MD prescribe more brand-name or generic drugs? ▼
William Locke, MD's prescribing is 10% brand-name and 90% generic drugs by claim count, with $8K in brand drug costs.
How many Obstetrics & Gynecology Physician providers are there in the US? ▼
There are 44,326 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does William Locke, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, William Locke, MD's most frequently prescribed drugs include Estradiol, Clotrimazole-Betamethasone, Fluconazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does William Locke, MD accept Medicare? ▼
William Locke, MD appears in CMS Medicare data with 506 Part D claims and 114 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Locke, MD's credentials? ▼
William Locke, MD's NPI is 1992886725 with credentials MD. 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.