Jeffrey John Thomas

  • Pomona, CA
  • Internist
NPI1932337136PAC ID7315101003
Medicare services, 2024
14,934
Medicare patients, 2024
3,363
Part D claims, 2024
940
Industry payments
$402
Affiliated sites
29
Practice address
1770 N Orange Grove Ave, Pomona, CA 91767
Practice phone
Call (909) 469-9494
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Premier Family Medicine Associates, Inc

Pomona, California

See all 61 affiliations

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Jeffrey John Thomas is an internist in Pomona, California

Jeffrey Thomas practices at Premier Family Medicine Associates, Inc in Pomona, California.

Jeffrey Thomas' NPI, 1932337136, was assigned on June 25, 2009. Jeffrey Thomas graduated from Tufts University School Of Medicine in 2009. Jeffrey Thomas holds California license A115831.

NPI and contact details
Medicare PAC ID
7315101003
NPI enumeration date
June 25, 2009
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(909) 469-9494
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
43
Medical school graduation
2009

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Jeffrey John Thomas practices at Premier Family Medicine Associates, Inc in Pomona, California

Jeffrey Thomas' primary practice is Premier Family Medicine Associates, Inc, at 1770 N Orange Grove Ave, Pomona, CA 91767 in Los Angeles County. The practice phone is (909) 469-9494.

  • Premier Family Medicine Associates, Inc
    1770 N Orange Grove Ave, Pomona, CA 91767 · Los Angeles CountyPhone(909) 469-9494

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Jeffrey John Thomas is affiliated with 30 sites of care and 31 medical groups

Jeffrey Thomas' primary practice is Premier Family Medicine Associates, Inc in Pomona, California. The medical group on file is PIH Health Physicians (John M. Geiss, DO). Dmand AI also links Jeffrey Thomas to 30 more medical groups, 25 group practices and clinics and 4 home health agencies, each named with a free account.

See all 61 affiliations for Jeffrey Thomas

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Jeffrey John Thomas' practice

Dmand AI tracks the electronic health record (EHR) system at each site where Jeffrey Thomas practices, 29 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Premier Family Medicine Associates, IncAvailable with a free account
+29 more sites and 30 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Jeffrey John Thomas is one of 16,751 internists in California

Internal medicine is Jeffrey Thomas' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Jeffrey Thomas is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Jeffrey Thomas' licenses on file in 15 states: California, South Dakota, Delaware, Florida, Arizona, Hawaii, Illinois, Kentucky, Montana, Nebraska, New Hampshire, New York, Ohio, Pennsylvania and Virginia.

Specialties and state licenses

  • Internal medicine, CaliforniaPrimaryLicense A115831 · 2011 to 2026 · taxonomy 207R00000X
  • South Dakota license
  • Delaware license2024 to 2027
  • Florida license2024 to 2027
  • Arizona license2024 to 2026
  • Hawaii license2025 to 2026
  • Illinois license2024 to 2026
  • Kentucky license2024 to 2026
  • Montana license2024 to 2026
  • Nebraska license2024 to 2026
  • New Hampshire license2024 to 2026
  • New York license2024 to 2026
  • Ohio license2024 to 2026
  • Pennsylvania license2024 to 2026
  • Virginia license2024 to 2026

Clinical focus

Dmand AI lists acute respiratory failure, cellulitis, gastrointestinal infection, gastrointestinal inflammation, kidney failure, pulmonary embolism and stroke among the conditions Jeffrey Thomas treats.

Internists near Jeffrey Thomas

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

Jeffrey John Thomas billed Medicare for 14,934 services in 2024

CMS data shows 14,934 Medicare services from Jeffrey Thomas across 14 procedure codes in 2024, for 3,363 Medicare patients. Medicare paid $2,769,125 for them. Every service was in an office.

Medicare services, 202414,934
Medicare patients3,363
Paid by Medicare$2.8M
Procedure codes14

Jeffrey Thomas' Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 1,1162024: 8,921699%
Other services
2023: 02024: 6,013

Jeffrey Thomas compared with the California median for internists, 2024

  • Jeffrey Thomas
  • California median
Medicare services
14,934vs 36141.4 times
Medicare patients
3,363vs 15122.3 times
Part D claims
613vs 42146% above

Medians across 15,815 internists in California with Dmand AI profiles that report each measure.

Jeffrey Thomas' 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.

See all procedures by Jeffrey Thomas

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Jeffrey John Thomas treated 3,363 Medicare patients in 2024, average age 84

CMS counts 3,363 Medicare patients who saw Jeffrey Thomas in 2024. The largest group is 85 and over, with 1,770 patients. 75% of them have alzheimer's and dementia, and 75% have high blood pressure. 13% are also on Medicaid. Their average risk score is 2.06, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Jeffrey Thomas' median patient age at 85, with 68% women.

Medicare patients, 20243,363
Average age84
Average risk score2.06
Also on Medicaid13%

Jeffrey Thomas' Medicare patients by age, 2024

Jeffrey Thomas' Medicare patients by sex, 2024

  • Women2,29968%
  • Men1,06432%

Chronic conditions among Jeffrey Thomas' Medicare patients, 2024

  1. Alzheimer's and dementia75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Mood disorders61%
  5. Depression58%
  6. Arthritis57%
  7. Anxiety51%
  8. Chronic kidney disease43%

Share of Medicare patients with each condition. A patient can have several.

Jeffrey Thomas' patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 85

Patient panel by sex, all payers

  • Women68%
  • Men30%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Jeffrey John Thomas wrote 940 Medicare Part D claims in 2024

In 2024, Jeffrey Thomas wrote 940 Medicare Part D claims for 145 patients. 95% of them were for generic drugs. CMS names the drug for 613 of them, across 29 drugs with 11 or more claims each, at $21,336 in total drug cost. In 2023, CMS named 428 claims across 24 drugs.

Part D claims, 2024940
Drugs named by CMS29
Total drug cost$21,336
Part D patients145

Jeffrey Thomas' Part D claims by kind of drug, 2024

  • Generic889 claims95%
  • Brand-name and other51 claims5%

Jeffrey Thomas' 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 Jeffrey Thomas' Part D claims, 2024

  • Opioids4%37 of 940 claims
  • Antibiotics2%19 of 940 claims
  • Antipsychotics, patients 65 and over5%44 of 940 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: 4282024: 61343%

Drugs named by CMS: 29 in 2024, 24 in 2023.

See all prescribing by Jeffrey Thomas

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

How Jeffrey John Thomas takes part in Medicare

Jeffrey Thomas accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Jeffrey John Thomas received $402 in industry payments from 2016 to 2025

CMS Open Payments shows 6 general payments to Jeffrey Thomas from 5 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novartis Pharmaceuticals Corporation paid the most, $125.

General payments to Jeffrey Thomas by program year, 2016 to 2025

Companies that paid Jeffrey Thomas the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Jeffrey Thomas

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Jeffrey John Thomas graduated from Tufts University School Of Medicine

Jeffrey Thomas graduated from Tufts University School Of Medicine in 2009.

  1. Medical schoolTufts University School Of Medicine
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Jeffrey John Thomas accepts plans from 4 insurance carriers

Jeffrey Thomas is in network with 4 carriers, including Aetna, Blue Cross Blue Shield of Michigan and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • HCSC
  • CMS Medicare

Plan types Jeffrey Thomas accepts, by number of carriers

  1. Medicare4
  2. PPO3
  3. HMO2
  4. POS2
  5. EPO1

Source: Dmand AI Insurance Network Data

Sources for Jeffrey John Thomas's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Jeffrey John Thomas

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Jeffrey John Thomas' NPI number?

Jeffrey John Thomas' NPI number is 1932337136. It was assigned on June 25, 2009, and it is active in the NPI Registry.

What does Jeffrey John Thomas specialize in?

Jeffrey John Thomas is an internist in Pomona, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Jeffrey John Thomas practice?

Jeffrey Thomas practices at 1770 N Orange Grove Ave, Pomona, CA 91767. Jeffrey Thomas' primary practice is Premier Family Medicine Associates, Inc in Pomona, California. Dmand AI also links Jeffrey Thomas to 30 medical groups, 25 group practices and clinics and 4 home health agencies.

What is Jeffrey John Thomas' office phone number?

The practice phone on file for Jeffrey Thomas is (909) 469-9494.

What is Jeffrey John Thomas' medical license number?

Jeffrey Thomas holds California license A115831, one of the licenses on file in 15 states.

Which states has Jeffrey John Thomas been licensed in?

Dmand AI has state licenses on file for Jeffrey Thomas in California (2011 to 2026), South Dakota, Delaware (2024 to 2027), Florida (2024 to 2027), Arizona (2024 to 2026), Hawaii (2025 to 2026), Illinois (2024 to 2026), Kentucky (2024 to 2026), Montana (2024 to 2026), Nebraska (2024 to 2026), New Hampshire (2024 to 2026), New York (2024 to 2026), Ohio (2024 to 2026), Pennsylvania (2024 to 2026) and Virginia (2024 to 2026).

What medical group is Jeffrey John Thomas part of?

Jeffrey Thomas is linked to PIH Health Physicians (John M. Geiss, DO). Dmand AI links Jeffrey Thomas to 30 more medical groups.

Does Jeffrey John Thomas accept Medicare?

Yes. CMS data shows Jeffrey Thomas billed Medicare for 14,934 services in 2024, and Jeffrey Thomas accepts Medicare assignment.

How many Medicare patients does Jeffrey John Thomas see?

CMS counts 3,363 Medicare patients who saw Jeffrey Thomas in 2024, with an average age of 84.

Is Jeffrey John Thomas board certified?

Yes. Jeffrey Thomas is board certified in internal medicine by the American Board of Internal Medicine.

Show 6 more questionsShow fewer questions

What services does Jeffrey John Thomas bill to Medicare?

In 2024, Jeffrey Thomas' most billed Medicare services were care management and other visits (99489), medicare service (G0523) and care management and other visits (99487).

Where did Jeffrey John Thomas go to medical school?

Jeffrey Thomas graduated from Tufts University School Of Medicine in 2009.

What drugs does Jeffrey John Thomas prescribe most?

In 2024 Medicare Part D data, Jeffrey Thomas' most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Sertraline HCl.

Has Jeffrey John Thomas received payments from drug or device companies?

CMS Open Payments shows $402 in general payments to Jeffrey Thomas from 5 companies from 2016 to 2025. The largest total came from Novartis Pharmaceuticals Corporation.

How long has Jeffrey John Thomas been practicing?

Jeffrey Thomas graduated from medical school in 2009, 17 years ago.

What insurance does Jeffrey John Thomas accept?

Jeffrey Thomas is in network with 4 carriers, including Aetna, Blue Cross Blue Shield of Michigan and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.

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