Dr. Tamara G. Dahhan, DO
- Medicare services, 2024
- 993
- Medicare patients, 2024
- 253
- Part D claims, 2024
- 1,618
- Publications
- 2
- MIPS score, 2024
- 88
- Practice address
- 5767 W Century Blvd, Los Angeles, CA 90045
- Practice phone
- Call (310) 794-1276
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
UCLA Medical Plaza
Los Angeles, California
Find Dr. Dahhan'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. Tamara G. Dahhan is a rheumatologist in Los Angeles, California
Dr. Dahhan practices at UCLA Medical Plaza in Los Angeles, California.
Dr. Dahhan's NPI, 1093074627, was assigned on May 16, 2012. Dr. Dahhan graduated from WesternU College of Osteopathic Medicine of the Pacific in 2012. Dr. Dahhan holds California license 20A13140.
- NPI
- 1093074627NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1052628526
- NPI enumeration date
- May 16, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (310) 794-1276
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Tamara G. Dahhan practices at UCLA Medical Plaza in Los Angeles, California
Dr. Dahhan's primary practice is UCLA Medical Plaza, at 5767 W Century Blvd, Los Angeles, CA 90045 in Los Angeles County. The practice phone is (310) 794-1276.
- UCLA Medical Plaza5767 W Century Blvd, Los Angeles, CA 90045 · Los Angeles CountyPhone(310) 794-1276
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Tamara G. Dahhan is affiliated with 4 sites of care and 2 medical groups
Dr. Dahhan's primary practice is UCLA Medical Plaza in Los Angeles, California. Dr. Dahhan is also affiliated with Ronald Reagan UCLA Medical Center. The medical group on file is Harbor-UCLA Medical Center. Dmand AI also links Dr. Dahhan to 2 more hospitals and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Tamara G. Dahhan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dahhan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCLA Medical Plaza | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Tamara G. Dahhan is one of 821 rheumatologists in California
Rheumatology is Dr. Dahhan's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Dahhan is board certified in internal medicine by the American Board of Internal Medicine. Dr. Dahhan is licensed in California.
Specialties and state licenses
- Rheumatology, CaliforniaPrimary
Clinical focus
Dmand AI lists arteritis, arthritis, fibromyalgia and chronic pain, gout, joint arthropathy, joint pain, lupus and muscle pain, fibromyalgia, and limb pain among the conditions Dr. Dahhan treats.
Rheumatologists near Dr. Dahhan
Counts of rheumatologists 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. Tamara G. Dahhan billed Medicare for 993 services in 2024
CMS data shows 993 Medicare services from Dr. Dahhan across 9 procedure codes in 2024, for 253 Medicare patients. Medicare paid $78,965 for them. Every service was in an office.
Dr. Dahhan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6542024: 6956%
- Drugs given in the office
- 2023: 1362024: 15111%
- Surgery
- 2023: 922024: 10110%
- Tests and treatments
- 2023: 542024: 4615%
- Other services
- 2023: 122024: 0100%
Dr. Dahhan compared with the California median for rheumatologists, 2024
- Dr. Dahhan
- California median
- Medicare services
- 993vs 90010% above
- Medicare patients
- 253vs 21617% above
- Part D claims
- 1,420vs 96248% above
Medians across 773 rheumatologists in California with Dmand AI profiles that report each measure.
Dr. Dahhan'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. Dahhan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Dahhan and other rheumatologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Tamara G. Dahhan treated 253 Medicare patients in 2024, average age 73
CMS counts 253 Medicare patients who saw Dr. Dahhan in 2024. The largest group is 65 to 74, with 113 patients. 75% of them have arthritis, and 75% have high blood pressure. 23% are also on Medicaid. Their average risk score is 1.72, 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. Dahhan's median patient age at 62, with 79% women.
Dr. Dahhan's Medicare patients by age, 2024
Dr. Dahhan's Medicare patients by sex, 2024
- Women20581%
- Men4819%
Chronic conditions among Dr. Dahhan's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease38%
- Diabetes34%
- Osteoporosis32%
- Anxiety26%
- Chronic kidney disease23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Dahhan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women79%
- Men20%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Tamara G. Dahhan wrote 1,618 Medicare Part D claims in 2024
In 2024, Dr. Dahhan wrote 1,618 Medicare Part D claims for 256 patients. 83% of them were for generic drugs. CMS names the drug for 1,420 of them, across 34 drugs with 11 or more claims each, at $1,129,920 in total drug cost. In 2023, CMS named 1,329 claims across 30 drugs.
Dr. Dahhan's Part D claims by kind of drug, 2024
- Generic1,337 claims83%
- Brand-name281 claims17%
Dr. Dahhan'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. Dahhan's Part D claims, 2024
- Opioids6%105 of 1,618 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: 1,3292024: 1,4207%
Drugs named by CMS: 34 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. Tamara G. Dahhan 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. Dahhan for performance year 2024, reported as part of a group. Dr. Dahhan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Dahhan as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Dahhan's MIPS scores, performance year 2024
- 88of 100Final score
- 79.4of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 74of 100Cost
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
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Dr. Tamara G. Dahhan has 2 publications on record
Dmand AI links 2 papers to Dr. Dahhan, published from 2018 to 2025. Dr. Dahhan's most frequent co-authors are Ramandeep Bains, MD, Philip J. Clements, MD and Emil Robert Heinze, MD.
Dr. Dahhan's most frequent co-authors
- Ramandeep Bains, MD1 shared paper
- Philip J. Clements, MD1 shared paper
- Emil Robert Heinze, MD1 shared paper
Recent publications by Dr. Dahhan
See who Dr. Dahhan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Dahhan works with, so you can find a warm path to the right rheumatologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Tamara G. Dahhan received $1,443 in industry payments from 2016 to 2024
CMS Open Payments shows 26 general payments to Dr. Dahhan from 8 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 97% of the total. Amgen Inc. paid the most, $470.
General payments to Dr. Dahhan by program year, 2016 to 2024
General payments to Dr. Dahhan by kind, 2016 to 2024
- Food and beverage$1,40797%
- Education$373%
Companies that paid Dr. Dahhan the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Tamara G. Dahhan graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Dahhan graduated from WesternU College of Osteopathic Medicine of the Pacific in 2012. Dr. Dahhan is a member of AOA.
- Medical school
- Board certified in internal medicine
- Board certified in rheumatology
Source: Dmand AI Professional Profile Data
Dr. Tamara G. Dahhan accepts plans from 14 insurance carriers
Dr. Dahhan is in network with 14 carriers, including Elevance, Aetna and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Elevance
- Aetna
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- Regence Health Plans
- Alliant Health Plans
- +6 more carriersWith a free account
Plan types Dr. Dahhan accepts, by number of carriers
- PPO9
- HMO7
- Medicare7
- EPO4
- POS3
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Tamara G. Dahhan'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 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) |
| 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. Tamara G. Dahhan
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. Tamara G. Dahhan's NPI number?
Dr. Tamara G. Dahhan's NPI number is 1093074627. It was assigned on May 16, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Tamara G. Dahhan?
Dr. Tamara G. Dahhan is a rheumatologist in Los Angeles, California. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Tamara G. Dahhan practice?
Dr. Dahhan practices at 5767 W Century Blvd, Los Angeles, CA 90045. Dr. Dahhan's primary practice is UCLA Medical Plaza in Los Angeles, California. Dmand AI also links Dr. Dahhan to 2 hospitals and 1 medical group.
What is Dr. Tamara G. Dahhan's office phone number?
The practice phone on file for Dr. Dahhan is (310) 794-1276.
What is Dr. Tamara G. Dahhan's medical license number?
Dr. Dahhan holds California license 20A13140.
Which hospitals is Dr. Tamara G. Dahhan affiliated with?
Dr. Dahhan is affiliated with Ronald Reagan UCLA Medical Center. Dmand AI links Dr. Dahhan to 2 more hospitals.
What medical group is Dr. Tamara G. Dahhan part of?
Dr. Dahhan is linked to Harbor-UCLA Medical Center. Dmand AI links Dr. Dahhan to 1 more medical group.
Does Dr. Tamara G. Dahhan accept Medicare?
Yes. CMS data shows Dr. Dahhan billed Medicare for 993 services in 2024, and Dr. Dahhan accepts Medicare assignment.
Does Dr. Tamara G. Dahhan offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Dahhan as offering telehealth services.
What is Dr. Tamara G. Dahhan's MIPS score?
Dr. Dahhan's MIPS final score for performance year 2024 is 88 out of 100, reported as part of a group.
Show 10 more questionsShow fewer questions
How many Medicare patients does Dr. Tamara G. Dahhan see?
CMS counts 253 Medicare patients who saw Dr. Dahhan in 2024, with an average age of 73.
Is Dr. Tamara G. Dahhan board certified?
Yes. Dr. Dahhan is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Tamara G. Dahhan bill to Medicare?
In 2024, Dr. Dahhan's most billed Medicare services were office visit, established patient (99214), injected or infused drug (J3301) and office visit, established patient (99213).
Where did Dr. Tamara G. Dahhan go to medical school?
Dr. Dahhan graduated from WesternU College of Osteopathic Medicine of the Pacific in 2012.
What drugs does Dr. Tamara G. Dahhan prescribe most?
In 2024 Medicare Part D data, Dr. Dahhan's most prescribed drugs by claims were Prednisone, Methotrexate and Hydroxychloroquine Sulfate.
Has Dr. Tamara G. Dahhan received payments from drug or device companies?
CMS Open Payments shows $1,443 in general payments to Dr. Dahhan from 8 companies from 2016 to 2024. The largest total came from Amgen Inc.
How long has Dr. Tamara G. Dahhan been practicing?
Dr. Dahhan graduated from medical school in 2012, 14 years ago.
Does Dr. Tamara G. Dahhan do research?
Dmand AI links 2 publications to Dr. Dahhan, published from 2018 to 2025.
Who does Dr. Tamara G. Dahhan publish with?
Dr. Dahhan's most frequent co-authors are Ramandeep Bains, MD (1 shared paper), Philip J. Clements, MD (1 shared paper) and Emil Robert Heinze, MD (1 shared paper).
What insurance does Dr. Tamara G. Dahhan accept?
Dr. Dahhan is in network with 14 carriers, including Elevance, Aetna and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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