James W. Lock, MD
Hypertension Specialist Physician · Walnut Grove, MS
James W. Lock, MD is a hypertension specialist physician with a practice address in Walnut Grove, Mississippi, and NPI 1063499002, issued on Dec 30, 2005. Check the license (Mississippi 12628, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- James W. Lock
- Credential
- MD
- Primary taxonomy
- Hypertension Specialist Physician 207RH0005X
- License number
- 12628 MS
Self-reported in NPPES; status is on the state search - Practice location
- 199 Rimmer Street, Walnut Grove, MS 39189
- Phone
- (601) 253-2733
- Enumerated
- Dec 30, 2005
- Record last updated
- Jun 26, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (601) 253-2733
- Medicaid ID
- 00116489 MS
- Medicare enrollment
- Enrolled (PECOS I20040715000296); accepts Medicare assignment
- Medical or professional school
- Meharry Medical College School Of Medicine, 1989
- Entity
- Type 1 · individual
2 nearest hypertension specialist physician records → All 3 in Mississippi → Look up another NPI →
Verify James W. Lock in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
Search for license 12628Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% more Medicare Part D claims than the average hypertension specialist physician in 2024
5,788 Medicare Part D claims for 278 beneficiaries, against an average of 3,198 among the 13 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 138 claims were for opioids.
Most prescribed
- Amlodipine Besylate392 claims
- Atorvastatin Calcium280 claims
- Carvedilol212 claims
- Losartan-Hydrochlorothiazide171 claims
- Metformin Hcl171 claims
- Gabapentin167 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- East Central Mississippi Health Care IncWalnut Grove, MS
- RH Hospitalist Medicine OF Jefferson Davis LLCPrentiss, MS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hypertension Specialist Physician providers in Mississippi
There are 3 hypertension specialist physician records in Mississippi.
All 3 in Mississippi → Hypertension Specialist Physician nationwide →
The 2 hypertension specialist physician records with the nearest ZIP codes
- Bryan Batson, MDHattiesburg, MS 394021104840958
- Philip Mellen, MDGulfport, MS 395071730108358
Common questions
What is James W. Lock, MD's NPI number?
James W. Lock, MD's National Provider Identifier (NPI) is 1063499002, issued on Dec 30, 2005. An NPI identifies a provider in billing; it is not a license.
Where is James W. Lock, MD located?
The NPPES record lists a practice address at 199 Rimmer Street, Walnut Grove, MS, 39189. Phone: (601) 253-2733. Providers update this record themselves, so call before visiting.
How can I verify James W. Lock, MD's license?
NPPES lists Mississippi license number 12628, as entered by the provider. Search the Mississippi State Board of Medical Licensure at https://www.msbml.ms.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James W. Lock, MD prescribe under Medicare Part D?
In 2024, James W. Lock, MD had 5,788 Medicare Part D claims for 278 beneficiaries; the average among hypertension specialist physician prescribers was 3,198. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.