Gagandeep Singh Grewal, M.D.
Internal Medicine Physician · Hattiesburg, MS
Gagandeep Singh Grewal, M.D. is an internal medicine physician with a practice address in Hattiesburg, Mississippi, and NPI 1114214038, issued on Jun 29, 2011. Check the license (Mississippi 23236, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- Gagandeep Singh Grewal
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 23236 MS
10170 MS
Self-reported in NPPES; status is on the state search - Practice location
- 5001 Hardy St, Hattiesburg, MS 39402
- Phone
- (601) 296-2090
- Enumerated
- Jun 29, 2011
- Record last updated
- Oct 8, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (601) 296-2089
- Medicaid ID
- 01888564 MS
- Medicare enrollment
- Enrolled (PECOS I20140827001778); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 972 in Mississippi → Look up another NPI →
Also registered at 5001 Hardy St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Cindy Armstead, D.O.Emergency Medicine Physician1942427802
- Kizzy Bailey, MDEmergency Medicine Physician1700046414
Verify Gagandeep Singh Grewal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
Search for license 23236Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average internal medicine physician in 2024
861 Medicare Part D claims for 180 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 20 claims were for opioids.
Most prescribed
- Atorvastatin Calcium47 claims
- Amlodipine Besylate29 claims
- Furosemide29 claims
- Losartan Potassium29 claims
- Levothyroxine Sodium28 claims
- Eliquis21 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.
The MIPS final score for 2023 (Medicare payment program): 89.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Hattiesburg HB Medical Services LLCHattiesburg, MS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gagandeep Singh Grewal among 972 internal medicine physician records in Mississippi
Gagandeep Singh Grewal, M.D. is one of 972 internal medicine physician records with a practice address in Mississippi. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 49% of them.
- NPI issued2011 · 49% of these records are older, 50% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2009 · median 2008 among the 585 with a school on file
- Record last updated2020 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
46 internal medicine physician records list a practice address in Hattiesburg
They are 46 of the 2,569 NPPES records with a practice address in Hattiesburg, and 972 internal medicine physician records in Mississippi.
All 972 in Mississippi → Every provider in Hattiesburg → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Larry Aycock, MDHattiesburg, MS 394021740238211
- Christy Barnett, M.D.Hattiesburg, MS 394021841271293
- Renee BowlingHattiesburg, MS 394021891886453
- Steven Farrell, MDHattiesburg, MS 394021669482907
- Gardner Fletcher, MDHattiesburg, MS 394021114982485
- Hannelore Giles, M.D.Hattiesburg, MS 394021710137906
- Jerry Hyer, MDHattiesburg, MS 394021770548950
- Sivarama Kotikalapudi, M.D.Hattiesburg, MS 394021124069521
Common questions
What is Gagandeep Singh Grewal, M.D.'s NPI number?
Gagandeep Singh Grewal, M.D.'s National Provider Identifier (NPI) is 1114214038, issued on Jun 29, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Gagandeep Singh Grewal, M.D. located?
The NPPES record lists a practice address at 5001 Hardy St, Hattiesburg, MS, 39402. Phone: (601) 296-2090. Providers update this record themselves, so call before visiting.
How can I verify Gagandeep Singh Grewal, M.D.'s license?
NPPES lists Mississippi license number 23236, 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 Gagandeep Singh Grewal, M.D. prescribe under Medicare Part D?
In 2024, Gagandeep Singh Grewal, M.D. had 861 Medicare Part D claims for 180 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Gagandeep Singh Grewal, M.D.'s MIPS final score?
The 2023 MIPS final score is 89.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.