Dr. Thomas Lewis Firnberg II, MD
- Medicare services, 2023
- 301
- Part D claims, 2024
- 1,128
- MIPS score, 2024
- 89
- Industry payments
- $3,435
- Affiliated sites
- 1
- Practice address
- 4095 County Circle Dr, Riverside, CA 92503
- Practice phone
- Call (760) 683-8455
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Desert Community Mental Health Center
Riverside, California
Find Dr. Firnberg'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. Thomas Lewis Firnberg II is a psychiatrist in Riverside, California
Dr. Firnberg practices at Desert Community Mental Health Center in Riverside, California.
Dr. Firnberg's NPI, 1164597472, was assigned on November 21, 2006. Dr. Firnberg graduated from LSU Health Sciences Center New Orleans - School of Medicine in 1982. Dr. Firnberg's Colorado license number on file is 48635.
- NPI
- 1164597472NPI Registry (opens in a new tab)
- NPI enumeration date
- November 21, 2006
- NPI status
- Active
- Practice phone
- (760) 683-8455
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Thomas Lewis Firnberg II practices at Desert Community Mental Health Center in Riverside, California
Dr. Firnberg's primary practice is Desert Community Mental Health Center, at 4095 County Circle Dr, Riverside, CA 92503 in Riverside County. The practice phone is (760) 683-8455.
- Desert Community Mental Health Center4095 County Circle Dr, Riverside, CA 92503 · Riverside CountyPhone(760) 683-8455
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Thomas Lewis Firnberg II is affiliated with 2 sites of care and 3 medical groups
Dr. Firnberg's primary practice is Desert Community Mental Health Center in Riverside, California. The medical group on file is Loma Linda University Faculty Medical Group (LLUFMG). Dmand AI also links Dr. Firnberg to 2 more medical groups and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Thomas Lewis Firnberg II's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Firnberg practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Desert Community Mental Health Center | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas Lewis Firnberg II is one of 6,803 psychiatrists in California
Psychiatry is Dr. Firnberg's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Firnberg is board certified in psychiatry by the American Board of Psychiatry and Neurology. Dmand AI has Dr. Firnberg's licenses on file in 10 states: Colorado, Montana, California, Texas, Idaho, Wyoming, Virginia, Alaska, Michigan and Louisiana.
Specialties and state licenses
- Psychiatry, ColoradoPrimary
- Montana license
- California license
- Texas license
- Idaho license
- Wyoming license
- Virginia license
- Alaska license
- Michigan license
- Louisiana license
Clinical focus
Dmand AI lists anxiety, bipolar disorder, depression and schizophrenia among the conditions Dr. Firnberg treats.
Psychiatrists near Dr. Firnberg
Counts of psychiatrists 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. Thomas Lewis Firnberg II billed Medicare for 301 services in 2023
CMS data shows 301 Medicare services from Dr. Firnberg across 3 procedure codes in 2023, all of them office visits. Medicare paid $21,228 for them. Every service was in an office.
Dr. Firnberg's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 2172023: 30139%
Dr. Firnberg compared with the California median for psychiatrists, 2023
- Dr. Firnberg
- California median
- Medicare services
- 301vs 1192.5 times
- Part D claims
- 988vs 1446.9 times
Medians across 6,809 psychiatrists in California with Dmand AI profiles that report each measure.
Dr. Firnberg's most billed Medicare procedure codes, 2023
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. Firnberg?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Firnberg and other psychiatrists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Thomas Lewis Firnberg II's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Dr. Firnberg's median patient age at 71, with 40% women.
Dr. Firnberg's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women40%
- Men60%
Source: Dmand AI Patient Panel Data
Dr. Thomas Lewis Firnberg II wrote 1,128 Medicare Part D claims in 2024
In 2024, Dr. Firnberg wrote 1,128 Medicare Part D claims for 105 patients. 92% of them were for generic drugs. CMS names the drug for 988 of them, across 30 drugs with 11 or more claims each, at $193,912 in total drug cost. In 2023, CMS named 2,506 claims across 43 drugs.
Dr. Firnberg's Part D claims by kind of drug, 2024
- Generic1,037 claims92%
- Brand-name91 claims8%
Dr. Firnberg'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. Firnberg's Part D claims, 2024
- Antipsychotics, patients 65 and over6%63 of 1,128 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: 2,5062024: 98861%
Drugs named by CMS: 30 in 2024, 43 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. Thomas Lewis Firnberg II scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Firnberg for performance year 2024, reported as part of a group.
Dr. Firnberg's MIPS scores, performance year 2024
- 89of 100Final score
- 72.1of 100Quality
- 80of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Thomas Lewis Firnberg II received $3,435 in industry payments from 2016 to 2025
CMS Open Payments shows 95 general payments to Dr. Firnberg from 10 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $913.
General payments to Dr. Firnberg by program year, 2016 to 2025
Companies that paid Dr. Firnberg the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Thomas Lewis Firnberg II graduated from LSU Health Sciences Center New Orleans - School of Medicine
Dr. Firnberg graduated from LSU Health Sciences Center New Orleans - School of Medicine in 1982.
- Medical school
- Board certified in psychiatry
Source: Dmand AI Professional Profile Data
Sources for Dr. Thomas Lewis Firnberg II'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 | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Thomas Lewis Firnberg II
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. Thomas Lewis Firnberg II's NPI number?
Dr. Thomas Lewis Firnberg II's NPI number is 1164597472. It was assigned on November 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas Lewis Firnberg II?
Dr. Thomas Lewis Firnberg II is a psychiatrist in Riverside, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Thomas Lewis Firnberg II practice?
Dr. Firnberg practices at 4095 County Circle Dr, Riverside, CA 92503. Dr. Firnberg's primary practice is Desert Community Mental Health Center in Riverside, California. Dmand AI also links Dr. Firnberg to 2 medical groups and 1 group practice or clinic.
What is Dr. Thomas Lewis Firnberg II's office phone number?
The practice phone on file for Dr. Firnberg is (760) 683-8455.
What is Dr. Thomas Lewis Firnberg II's medical license number?
Dr. Firnberg's Colorado license number on file is 48635, one of the licenses on file in 10 states.
Which states has Dr. Thomas Lewis Firnberg II been licensed in?
Dmand AI has state licenses on file for Dr. Firnberg in Colorado (2010 to 2023), Montana (2021 to 2027), California (1983 to 2026), Texas (2020 to 2025), Idaho (2009 to 2023), Wyoming (2021 to 2023), Virginia (2018 to 2020), Alaska (2012 to 2013), Michigan (1982 to 1983) and Louisiana (1982).
What medical group is Dr. Thomas Lewis Firnberg II part of?
Dr. Firnberg is linked to Loma Linda University Faculty Medical Group (LLUFMG). Dmand AI links Dr. Firnberg to 2 more medical groups.
Does Dr. Thomas Lewis Firnberg II accept Medicare?
Yes. CMS data shows Dr. Firnberg billed Medicare for 301 services in 2023.
What is Dr. Thomas Lewis Firnberg II's MIPS score?
Dr. Firnberg's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
Is Dr. Thomas Lewis Firnberg II board certified?
Yes. Dr. Firnberg is board certified in psychiatry by the American Board of Psychiatry and Neurology.
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What services does Dr. Thomas Lewis Firnberg II bill to Medicare?
In 2023, Dr. Firnberg's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and office visit, established patient (99215).
Where did Dr. Thomas Lewis Firnberg II go to medical school?
Dr. Firnberg graduated from LSU Health Sciences Center New Orleans - School of Medicine in 1982.
What drugs does Dr. Thomas Lewis Firnberg II prescribe most?
In 2024 Medicare Part D data, Dr. Firnberg's most prescribed drugs by claims were Lamotrigine, Lurasidone HCl and Quetiapine Fumarate.
Has Dr. Thomas Lewis Firnberg II received payments from drug or device companies?
CMS Open Payments shows $3,435 in general payments to Dr. Firnberg from 10 companies from 2016 to 2025. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Thomas Lewis Firnberg II been practicing?
Dr. Firnberg graduated from medical school in 1982, 44 years ago.
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