Dr. Gagandeep Singh Grewal, MD
- Medicare services, 2024
- 1,316
- Medicare patients, 2024
- 364
- Part D claims, 2024
- 861
- Publications
- 1
- MIPS score, 2024
- 88
- Practice address
- 5001 W Hardy St, Hattiesburg, MS 39402
- Practice phone
- Call (601) 268-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Grewal's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Gagandeep Singh Grewal is an internist in Hattiesburg, Mississippi
Dr. Grewal practices at Merit Health Wesley in Hattiesburg, Mississippi, part of Community Health Systems.
Dr. Grewal's NPI, 1114214038, was assigned on June 29, 2011. Dr. Grewal holds Mississippi license 23236.
- NPI
- 1114214038NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4688892029
- NPI enumeration date
- June 29, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (601) 268-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gagandeep Singh Grewal practices at Merit Health Wesley in Hattiesburg, Mississippi
Dr. Grewal's primary practice is Merit Health Wesley, at 5001 W Hardy St, Hattiesburg, MS 39402 in Lamar County. The practice phone is (601) 268-8000.
- Merit Health Wesley5001 W Hardy St, Hattiesburg, MS 39402 · Lamar CountyPhone(601) 268-8000
Source: Dmand AI Affiliation Data
Dr. Gagandeep Singh Grewal is affiliated with 6 sites of care and 2 medical groups
Dr. Grewal's primary practice is Merit Health Wesley in Hattiesburg, Mississippi, part of Community Health Systems. Dr. Grewal is also affiliated with Highland Community Hospital. The medical group on file is Merit Health Wesley. Dmand AI also links Dr. Grewal to 1 more hospital, 1 breast imaging center, 1 clinical lab, 1 hospice and 1 medical group, each named with a free account. Dr. Grewal's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gagandeep Singh Grewal's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grewal practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Merit Health Wesley | Available with a free account |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Community Health Systems and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Gagandeep Singh Grewal is one of 785 internists in Mississippi
Internal medicine is Dr. Grewal's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Grewal is licensed in Mississippi.
Specialties and state licenses
- Internal medicine, MississippiPrimary
Internists near Dr. Grewal
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Gagandeep Singh Grewal billed Medicare for 1,316 services in 2024
CMS data shows 1,316 Medicare services from Dr. Grewal across 8 procedure codes in 2024, for 364 Medicare patients. Medicare paid $88,472 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Grewal's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,3802024: 1,3165%
Dr. Grewal compared with the Mississippi median for internists, 2024
- Dr. Grewal
- Mississippi median
- Medicare services
- 1,316vs 98733% above
- Medicare patients
- 364vs 31416% above
- Part D claims
- 417vs 28148% above
Medians across 747 internists in Mississippi with Dmand AI profiles that report each measure.
Dr. Grewal's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Grewal?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Grewal and other internists in Mississippi.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gagandeep Singh Grewal treated 364 Medicare patients in 2024, average age 77
CMS counts 364 Medicare patients who saw Dr. Grewal in 2024. The largest group is 75 to 84, with 121 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 30% are also on Medicaid. Their average risk score is 2.19, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Grewal's median patient age at 77, with 57% women.
Dr. Grewal's Medicare patients by age, 2024
Dr. Grewal's Medicare patients by sex, 2024
- Women19453%
- Men17047%
Chronic conditions among Dr. Grewal's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis68%
- Ischemic heart disease54%
- Mood disorders53%
- Depression50%
- Anxiety49%
- Diabetes48%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grewal's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gagandeep Singh Grewal wrote 861 Medicare Part D claims in 2024
In 2024, Dr. Grewal wrote 861 Medicare Part D claims for 180 patients. 88% of them were for generic drugs. CMS names the drug for 417 of them, across 23 drugs with 11 or more claims each, at $13,619 in total drug cost. In 2023, CMS named 676 claims across 30 drugs.
Dr. Grewal's Part D claims by kind of drug, 2024
- Generic760 claims88%
- Brand-name and other101 claims12%
Dr. Grewal's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Grewal's Part D claims, 2024
- Opioids2%20 of 861 claims
- Antibiotics10%87 of 861 claims
- Antipsychotics, patients 65 and over4%33 of 861 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6762024: 41738%
Drugs named by CMS: 23 in 2024, 30 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Gagandeep Singh Grewal scored 88 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 88 out of 100 for Dr. Grewal for performance year 2024, reported through an alternative payment model (APM). Dr. Grewal accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Grewal's MIPS scores, performance year 2024
- 88of 100Final score
- 73.9of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Gagandeep Singh Grewal has 1 publication on record
Dmand AI links 1 paper to Dr. Grewal. Dr. Grewal's most frequent co-authors are Marcus Brian Goodman, DO and Michael William Roberts, MD.
Dr. Grewal's most frequent co-authors
Recent publications by Dr. Grewal
See who Dr. Grewal researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Grewal works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Gagandeep Singh Grewal received $138 in industry payments from 2016 to 2025
CMS Open Payments shows 7 general payments to Dr. Grewal from 6 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $39.
General payments to Dr. Grewal by program year, 2016 to 2025
Companies that paid Dr. Grewal the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Gagandeep Singh Grewal's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Gagandeep Singh Grewal
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Gagandeep Singh Grewal's NPI number?
Dr. Gagandeep Singh Grewal's NPI number is 1114214038. It was assigned on June 29, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Gagandeep Singh Grewal?
Dr. Gagandeep Singh Grewal is an internist in Hattiesburg, Mississippi. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Gagandeep Singh Grewal practice?
Dr. Grewal practices at 5001 W Hardy St, Hattiesburg, MS 39402. Dr. Grewal's primary practice is Merit Health Wesley in Hattiesburg, Mississippi, part of Community Health Systems. Dmand AI also links Dr. Grewal to 1 hospital, 1 breast imaging center, 1 clinical lab, 1 hospice and 1 medical group.
What is Dr. Gagandeep Singh Grewal's office phone number?
The practice phone on file for Dr. Grewal is (601) 268-8000.
What is Dr. Gagandeep Singh Grewal's medical license number?
Dr. Grewal holds Mississippi license 23236.
Which hospitals is Dr. Gagandeep Singh Grewal affiliated with?
Dr. Grewal practices at Merit Health Wesley in Hattiesburg, Mississippi. Dr. Grewal is also affiliated with Highland Community Hospital. Dmand AI links Dr. Grewal to 1 more hospital.
What medical group is Dr. Gagandeep Singh Grewal part of?
Dr. Grewal is linked to Merit Health Wesley. Dmand AI links Dr. Grewal to 1 more medical group.
Does Dr. Gagandeep Singh Grewal accept Medicare?
Yes. CMS data shows Dr. Grewal billed Medicare for 1,316 services in 2024, and Dr. Grewal accepts Medicare assignment.
What is Dr. Gagandeep Singh Grewal's MIPS score?
Dr. Grewal's MIPS final score for performance year 2024 is 88 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Gagandeep Singh Grewal see?
CMS counts 364 Medicare patients who saw Dr. Grewal in 2024, with an average age of 77.
Show 6 more questionsShow fewer questions
What services does Dr. Gagandeep Singh Grewal bill to Medicare?
In 2024, Dr. Grewal's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99239) and hospital inpatient care (99233).
What drugs does Dr. Gagandeep Singh Grewal prescribe most?
In 2024 Medicare Part D data, Dr. Grewal's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Furosemide.
Has Dr. Gagandeep Singh Grewal received payments from drug or device companies?
CMS Open Payments shows $138 in general payments to Dr. Grewal from 6 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Gagandeep Singh Grewal been practicing?
Dr. Grewal graduated from medical school in 2009, 17 years ago.
Does Dr. Gagandeep Singh Grewal do research?
Dmand AI links 1 publication to Dr. Grewal.
Who does Dr. Gagandeep Singh Grewal publish with?
Dr. Grewal's most frequent co-authors are Marcus Brian Goodman, DO (1 shared paper) and Michael William Roberts, MD (1 shared paper).
Selling to internal medicine practices?
See internists in Mississippi by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card