Dr. Zachary Simon Thomas, MD
- Medicare services, 2019
- 90
- Part D claims, 2024
- 1,254
- Industry payments
- $467
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 5454 El Cajon Blvd, San Diego, CA 92115
- Practice phone
- Call (619) 515-2400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
City Heights Family Health Center
FQHC - Main Site · San Diego, California
Find Dr. Thomas' 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. Zachary Simon Thomas is a family medicine physician in San Diego, California
Dr. Thomas practices at City Heights Family Health Center in San Diego, California.
Dr. Thomas' NPI, 1326453119, was assigned on June 30, 2014. Dr. Thomas graduated from American University of the Caribbean School of Medicine in 2013. Dr. Thomas holds California license A145023.
- NPI
- 1326453119NPI Registry (opens in a new tab)
- NPI enumeration date
- June 30, 2014
- NPI status
- Active
- Practice phone
- (619) 515-2400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Zachary Simon Thomas practices at City Heights Family Health Center in San Diego, California
Dr. Thomas' primary practice is City Heights Family Health Center, at 5454 El Cajon Blvd, San Diego, CA 92115. The practice phone is (619) 515-2400.
- City Heights Family Health Center5454 El Cajon Blvd, San Diego, CA 92115Phone(619) 515-2400
Source: Dmand AI Affiliation Data
Dr. Zachary Simon Thomas is affiliated with 1 site of care and 1 medical group
Dr. Thomas' primary practice is City Heights Family Health Center in San Diego, California. The medical group on file is Family Health Centers of San Diego.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Zachary Simon Thomas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Thomas practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| City Heights Family Health Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Zachary Simon Thomas is one of 15,680 family medicine physicians in California
Family medicine is Dr. Thomas' primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Thomas is board certified in family medicine by the American Board of Family Medicine. Dr. Thomas is licensed in California.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acute gastroduodenitis, acute skin infection, aneurysm, carpal tunnel syndrome, chronic anemia, chronic diabetes, chronic hypertension and chronic kidney disease among the conditions Dr. Thomas treats.
Family medicine physicians near Dr. Thomas
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. Zachary Simon Thomas billed Medicare for 90 services in 2019
CMS data shows 90 Medicare services from Dr. Thomas across 5 procedure codes in 2019. Medicare paid $1,107 for them. Every service was in an office.
Dr. Thomas' Medicare services by type, 2018 to 2019
- 2018
- 2019
- Lab and pathology
- 2018: 982019: 908%
Dr. Thomas compared with the California median for family medicine physicians, 2019
- Dr. Thomas
- California median
- Medicare services
- 90vs 24663% below
- Part D claims
- 899vs 8338% above
Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Thomas' most billed Medicare procedure codes, 2019
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Thomas 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. Zachary Simon Thomas' patients have a median age of 50
Across all payers, Dmand AI patient panel data puts Dr. Thomas' median patient age at 50, with 69% women.
Dr. Thomas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 50
Patient panel by sex, all payers
- Women69%
- Men30%
Source: Dmand AI Patient Panel Data
Dr. Zachary Simon Thomas wrote 1,254 Medicare Part D claims in 2024
In 2024, Dr. Thomas wrote 1,254 Medicare Part D claims for 117 patients. 84% of them were for generic drugs. CMS names the drug for 899 of them, across 36 drugs with 11 or more claims each, at $97,752 in total drug cost. In 2023, CMS named 835 claims across 24 drugs.
Dr. Thomas' Part D claims by kind of drug, 2024
- Generic1,048 claims84%
- Brand-name189 claims15%
- Other17 claims1%
Dr. 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 Dr. Thomas' Part D claims, 2024
- Antibiotics1%15 of 1,254 claims
- Antipsychotics, patients 65 and over1%12 of 1,254 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: 8352024: 8998%
Drugs named by CMS: 36 in 2024, 24 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
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Dr. Zachary Simon Thomas received $467 in industry payments from 2017 to 2023
CMS Open Payments shows 7 general payments to Dr. Thomas from 5 drug and device companies from 2017 to 2023. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $203.
General payments to Dr. Thomas by program year, 2017 to 2023
Companies that paid Dr. Thomas the most, 2017 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Zachary Simon Thomas has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Thomas, most recently Physician Lead - City Heights/Ibarra in 2020.
Awards and honors for Dr. Thomas
- 2020
- Physician Lead - City Heights/Ibarra
- 2017
- Chief Resident
- STFM Resident Teacher Award
Source: Dmand AI Professional Profile Data
Dr. Zachary Simon Thomas graduated from American University of the Caribbean School of Medicine
Dr. Thomas graduated from American University of the Caribbean School of Medicine in 2013. Dr. Thomas is a member of AAFP and Society of Teachers of Family Medicine.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Dr. Zachary Simon Thomas accepts plans from 2 insurance carriers
Dr. Thomas is in network with 2 carriers, including CMS Medicare and Molina. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
- CMS Medicare
- Molina
Source: Dmand AI Insurance Network Data
Sources for Dr. Zachary Simon Thomas'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 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Zachary Simon 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 Dr. Zachary Simon Thomas' NPI number?
Dr. Zachary Simon Thomas' NPI number is 1326453119. It was assigned on June 30, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Zachary Simon Thomas?
Dr. Zachary Simon Thomas is a family medicine physician in San Diego, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Zachary Simon Thomas practice?
Dr. Thomas practices at 5454 El Cajon Blvd, San Diego, CA 92115. Dr. Thomas' primary practice is City Heights Family Health Center in San Diego, California.
What is Dr. Zachary Simon Thomas' office phone number?
The practice phone on file for Dr. Thomas is (619) 515-2400.
What is Dr. Zachary Simon Thomas' medical license number?
Dr. Thomas holds California license A145023.
What medical group is Dr. Zachary Simon Thomas part of?
Dr. Thomas is linked to Family Health Centers of San Diego.
Does Dr. Zachary Simon Thomas accept Medicare?
Yes. CMS data shows Dr. Thomas billed Medicare for 90 services in 2019.
Is Dr. Zachary Simon Thomas board certified?
Yes. Dr. Thomas is board certified in family medicine by the American Board of Family Medicine.
What services does Dr. Zachary Simon Thomas bill to Medicare?
In 2019, Dr. Thomas' most billed Medicare services were lab and pathology test (80053), lab and pathology test (85025) and lab and pathology test (80061).
Where did Dr. Zachary Simon Thomas go to medical school?
Dr. Thomas graduated from American University of the Caribbean School of Medicine in 2013.
Show 4 more questionsShow fewer questions
What drugs does Dr. Zachary Simon Thomas prescribe most?
In 2024 Medicare Part D data, Dr. Thomas' most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Lisinopril.
Has Dr. Zachary Simon Thomas received payments from drug or device companies?
CMS Open Payments shows $467 in general payments to Dr. Thomas from 5 companies from 2017 to 2023. The largest total came from Stryker Corporation.
How long has Dr. Zachary Simon Thomas been practicing?
Dr. Thomas graduated from medical school in 2013, 13 years ago.
What insurance does Dr. Zachary Simon Thomas accept?
Dr. Thomas is in network with 2 carriers, including CMS Medicare and Molina. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
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