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Dr. Gregory Vernon Williams, MD
NPI1972819282PAC ID1254570062
- Medicare services, 2020
- 624
- Part D claims, 2024
- 551
- Publications
- 1
- Industry payments
- $69
- Medical groups
- 4
- Practice address
- 476 E Washington St, Earlimart, CA 93219
- Practice phone
- Call (661) 849-2781
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
United Health Centers of the San Joaquin Valley
Earlimart, California
Find Dr. Williams' professional email, personal email and mobile number
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Dr. Gregory Vernon Williams is a family medicine physician in Earlimart, California
Dr. Williams practices at United Health Centers of the San Joaquin Valley in Earlimart, California.
Dr. Williams' NPI, 1972819282, was assigned on August 24, 2010. Dr. Williams graduated from Howard University College Of Medicine in 2010. Dr. Williams holds California license A118641.
NPI and contact details
- NPI
- 1972819282NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254570062
- NPI enumeration date
- August 24, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (661) 849-2781
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory Vernon Williams practices at United Health Centers of the San Joaquin Valley in Earlimart, California
Dr. Williams' primary practice is United Health Centers of the San Joaquin Valley, at 476 E Washington St, Earlimart, CA 93219 in Tulare County. The practice phone is (661) 849-2781.
- United Health Centers of the San Joaquin Valley476 E Washington St, Earlimart, CA 93219 · Tulare CountyPhone(661) 849-2781
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gregory Vernon Williams is affiliated with 1 site of care and 4 medical groups
Dr. Williams' primary practice is United Health Centers of the San Joaquin Valley in Earlimart, California. The medical group on file is John Muir Medical Group. Dmand AI also links Dr. Williams to 3 more medical groups, each named with a free account.
United Health Centers of the San Joaquin ValleyPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gregory Vernon Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williams practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| United Health Centers of the San Joaquin Valley | Available with a free account |
| +3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory Vernon Williams is one of 15,680 family medicine physicians in California
Family medicine is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Williams is board certified in family medicine by the American Board of Family Medicine. Dmand AI has Dr. Williams' licenses on file in 15 states: California, Florida, South Dakota, Nevada, South Carolina, Arizona, District of Columbia, Iowa, Illinois, Louisiana, Missouri, North Carolina, New York, Tennessee and Texas.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
- Florida license
- South Dakota license
- Nevada license
- South Carolina license
- Arizona license
- District of Columbia license
- Iowa license
- Illinois license
- Louisiana license
- Missouri license
- North Carolina license
- New York license
- Tennessee license
- Texas license
Clinical focus
Dmand AI lists acid reflux, acute gastroduodenitis, acute kidney failure, acute sinusitis, acute skin infection, adjustment disease, alcohol use disorders and alzheimer's disease among the conditions Dr. Williams treats.
Family medicine physicians near Dr. Williams
Counts of family medicine physicians 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. Gregory Vernon Williams billed Medicare for 624 services in 2020
CMS data shows 624 Medicare services from Dr. Williams across 6 procedure codes in 2020. Medicare paid $27,464 for them. Every service was in an office.
Medicare services, 2020624
Paid by Medicare$27,464
Procedure codes6
Dr. Williams' Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 6012020: 49218%
- Lab and pathology
- 2019: 1102020: 1073%
- Imaging
- 2019: 342020: 2526%
- Tests and treatments
- 2019: 472020: 0100%
- Surgery
- 2019: 112020: 0100%
Dr. Williams compared with the California median for family medicine physicians, 2020
- Dr. Williams
- California median
- Medicare services
- 624vs 2462.5 times
- Part D claims
- 289vs 83365% below
Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Williams' most billed Medicare procedure codes, 2020
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. Williams?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Williams and other family medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory Vernon Williams' patients have a median age of 41
Across all payers, Dmand AI patient panel data puts Dr. Williams' median patient age at 41, with 48% women.
Dr. Williams' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 41
Patient panel by sex, all payers
- Women48%
- Men48%
Source: Dmand AI Patient Panel Data
Dr. Gregory Vernon Williams wrote 551 Medicare Part D claims in 2024
In 2024, Dr. Williams wrote 551 Medicare Part D claims for 83 patients. 80% of them were for generic drugs. CMS names the drug for 289 of them, across 14 drugs with 11 or more claims each, at $27,839 in total drug cost. In 2023, CMS named 223 claims across 14 drugs.
Part D claims, 2024551
Drugs named by CMS14
Total drug cost$27,839
Part D patients83
Dr. Williams' Part D claims by kind of drug, 2024
- Generic441 claims80%
- Brand-name and other110 claims20%
Dr. Williams' 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. Williams' Part D claims, 2024
- Antibiotics3%15 of 551 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: 2232024: 28930%
Drugs named by CMS: 14 in 2024, 14 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. Gregory Vernon Williams offers telehealth to Medicare patients
Dr. Williams accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Williams as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Gregory Vernon Williams has 1 publication on record
Dmand AI links 1 paper to Dr. Williams. Dr. Williams' most frequent co-author is Wolali A. Odonkor, MD.
Papers1
Dr. Williams' most frequent co-authors
Recent publications by Dr. Williams
See who Dr. Williams researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Williams works with, so you can find a warm path to the right family medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Gregory Vernon Williams received $69 in industry payments from 2019 to 2024
CMS Open Payments shows 3 general payments to Dr. Williams from 2 drug and device companies from 2019 to 2024. Food and beverage make up the largest share, 100% of the total. Organogenesis Inc. paid the most, $56.
General payments to Dr. Williams by program year, 2019 to 2024
Companies that paid Dr. Williams the most, 2019 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory Vernon Williams graduated from Howard University College Of Medicine
Dr. Williams graduated from Howard University College Of Medicine in 2010.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Dr. Gregory Vernon Williams accepts plans from 10 insurance carriers
Dr. Williams is in network with 10 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Humana
- Regence Health Plans
- Arkansas Blue Cross and Blue Shield
- +2 more carriersWith a free account
Plan types Dr. Williams accepts, by number of carriers
- Medicare9
- PPO8
- HMO3
- POS3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Gregory Vernon Williams'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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 Data |
| 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) |
| 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) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| 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. Gregory Vernon Williams
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. Gregory Vernon Williams' NPI number?
Dr. Gregory Vernon Williams' NPI number is 1972819282. It was assigned on August 24, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Vernon Williams?
Dr. Gregory Vernon Williams is a family medicine physician in Earlimart, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Gregory Vernon Williams practice?
Dr. Williams practices at 476 E Washington St, Earlimart, CA 93219. Dr. Williams' primary practice is United Health Centers of the San Joaquin Valley in Earlimart, California. Dmand AI also links Dr. Williams to 3 medical groups.
What is Dr. Gregory Vernon Williams' office phone number?
The practice phone on file for Dr. Williams is (661) 849-2781.
What is Dr. Gregory Vernon Williams' medical license number?
Dr. Williams holds California license A118641, one of the licenses on file in 15 states.
Which states has Dr. Gregory Vernon Williams been licensed in?
Dmand AI has state licenses on file for Dr. Williams in California (2011 to 2027), Florida (since 2020), South Dakota (since 2023), Nevada (2019 to 2027), South Carolina (2021 to 2027), Arizona (2022 to 2026), District of Columbia (2022 to 2026), Iowa (2022 to 2026), Illinois (2021 to 2026), Louisiana (2021 to 2026), Missouri (2021 to 2026), North Carolina (2021 to 2026), New York (2021 to 2026), Tennessee (2022 to 2026) and Texas (2024 to 2026).
What medical group is Dr. Gregory Vernon Williams part of?
Dr. Williams is linked to John Muir Medical Group. Dmand AI links Dr. Williams to 3 more medical groups.
Does Dr. Gregory Vernon Williams accept Medicare?
Yes. CMS data shows Dr. Williams billed Medicare for 624 services in 2020, and Dr. Williams accepts Medicare assignment.
Does Dr. Gregory Vernon Williams offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Williams as offering telehealth services.
Is Dr. Gregory Vernon Williams board certified?
Yes. Dr. Williams is board certified in family medicine by the American Board of Family Medicine.
Show 8 more questionsShow fewer questions
What services does Dr. Gregory Vernon Williams bill to Medicare?
In 2020, Dr. Williams' most billed Medicare services were office visit, established patient (99213), office visit, new patient (99203) and lab and pathology test (81002).
Where did Dr. Gregory Vernon Williams go to medical school?
Dr. Williams graduated from Howard University College Of Medicine in 2010.
What drugs does Dr. Gregory Vernon Williams prescribe most?
In 2024 Medicare Part D data, Dr. Williams' most prescribed drugs by claims were Atorvastatin Calcium, Gabapentin and Lisinopril.
Has Dr. Gregory Vernon Williams received payments from drug or device companies?
CMS Open Payments shows $69 in general payments to Dr. Williams from 2 companies from 2019 to 2024. The largest total came from Organogenesis Inc.
How long has Dr. Gregory Vernon Williams been practicing?
Dr. Williams graduated from medical school in 2010, 16 years ago.
Does Dr. Gregory Vernon Williams do research?
Dmand AI links 1 publication to Dr. Williams.
Who does Dr. Gregory Vernon Williams publish with?
Dr. Williams' most frequent co-authors are Wolali A. Odonkor, MD (1 shared paper).
What insurance does Dr. Gregory Vernon Williams accept?
Dr. Williams is in network with 10 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
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