Dr. Reham A. Hassan, DO
- Medicare services, 2024
- 49
- Medicare patients, 2024
- 141
- Hospital affiliations
- 3
- Industry payments
- $63
- Medical groups
- 5
- Practice address
- 17100 Euclid Street, Fountain Valley, CA 92708
- Practice phone
- Call (714) 966-7200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Hassan'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. Reham A. Hassan is an anesthesiologist in Fountain Valley, California
Dr. Hassan practices at UCI Health - Fountain Valley in Fountain Valley, California, part of UC Irvine.
Dr. Hassan's NPI, 1346368388, was assigned on March 27, 2007. Dr. Hassan graduated from WesternU College of Osteopathic Medicine of the Pacific in 2003. Dr. Hassan holds California license 20A9054.
- NPI
- 1346368388NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0042306219
- NPI enumeration date
- March 27, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (714) 966-7200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Reham A. Hassan practices at UCI Health - Fountain Valley in Fountain Valley, California
Dr. Hassan's primary practice is UCI Health - Fountain Valley, at 17100 Euclid Street, Fountain Valley, CA 92708 in Orange County. The practice phone is (714) 966-7200.
- UCI Health - Fountain Valley17100 Euclid Street, Fountain Valley, CA 92708 · Orange CountyPhone(714) 966-7200
Source: Dmand AI Affiliation Data
Dr. Reham A. Hassan is affiliated with 4 sites of care and 5 medical groups
Dr. Hassan's primary practice is UCI Health - Fountain Valley in Fountain Valley, California, part of UC Irvine. Dr. Hassan is also affiliated with UCI Health - Orange. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Hassan to 1 more hospital, 4 medical groups and 1 hospital outpatient department, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Reham A. Hassan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hassan practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCI Health - Fountain Valley | Available with a free account |
| +3 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Reham A. Hassan is one of 6,593 anesthesiologists in California
Anesthesiology is Dr. Hassan's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Hassan is board certified in anesthesiology by the American Board of Anesthesiology. Dr. Hassan is licensed in California.
Specialties and state licenses
- Anesthesiology, CaliforniaPrimary
Anesthesiologists near Dr. Hassan
Counts of anesthesiologists 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. Reham A. Hassan billed Medicare for 49 services in 2024
CMS data shows 49 Medicare services from Dr. Hassan across 3 procedure codes in 2024, for 141 Medicare patients. Medicare paid $4,532 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Hassan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 322024: 4953%
Dr. Hassan compared with the California median for anesthesiologists, 2024
- Dr. Hassan
- California median
- Medicare services
- 49vs 7232% below
- Medicare patients
- 141vs 143Close to median
Medians across 5,562 anesthesiologists in California with Dmand AI profiles that report each measure.
Dr. Hassan'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. Hassan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hassan and other anesthesiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Reham A. Hassan treated 141 Medicare patients in 2024, average age 71
CMS counts 141 Medicare patients who saw Dr. Hassan in 2024. The largest group is 65 to 74, with 71 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 36% are also on Medicaid. Their average risk score is 1.93, 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. Hassan's median patient age at 55, with 57% women.
Dr. Hassan's Medicare patients by age, 2024
Dr. Hassan's Medicare patients by sex, 2024
- Women7553%
- Men6647%
Chronic conditions among Dr. Hassan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis54%
- Diabetes40%
- Mood disorders36%
- Depression34%
- Ischemic heart disease33%
- Anxiety29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hassan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Reham A. Hassan takes part in Medicare
Dr. Hassan 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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Dr. Reham A. Hassan received $63 in industry payments from 2016 to 2025
CMS Open Payments shows 3 general payments to Dr. Hassan from 3 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $26.
General payments to Dr. Hassan by program year, 2016 to 2025
Companies that paid Dr. Hassan 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. Reham A. Hassan graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Hassan graduated from WesternU College of Osteopathic Medicine of the Pacific in 2003. Dr. Hassan is a member of AOA.
- Medical school
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Dr. Reham A. Hassan accepts plans from 13 insurance carriers
Dr. Hassan is in network with 13 carriers, including United Healthcare, Elevance and Aetna. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
- United Healthcare
- Elevance
- Aetna
- Alliant Health Plans
- Blue Cross Blue Shield of Michigan
- HCSC
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- +5 more carriersWith a free account
Plan types Dr. Hassan accepts, by number of carriers
- PPO8
- HMO6
- EPO3
- POS3
- Medicare2
Source: Dmand AI Insurance Network Data
Sources for Dr. Reham A. Hassan'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 DataMedicare Physician & Other Practitioners - 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) |
| 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. Reham A. Hassan
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. Reham A. Hassan's NPI number?
Dr. Reham A. Hassan's NPI number is 1346368388. It was assigned on March 27, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Reham A. Hassan?
Dr. Reham A. Hassan is an anesthesiologist in Fountain Valley, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Reham A. Hassan practice?
Dr. Hassan practices at 17100 Euclid Street, Fountain Valley, CA 92708. Dr. Hassan's primary practice is UCI Health - Fountain Valley in Fountain Valley, California, part of UC Irvine. Dmand AI also links Dr. Hassan to 1 hospital, 4 medical groups and 1 hospital outpatient department.
What is Dr. Reham A. Hassan's office phone number?
The practice phone on file for Dr. Hassan is (714) 966-7200.
What is Dr. Reham A. Hassan's medical license number?
Dr. Hassan holds California license 20A9054.
Which hospitals is Dr. Reham A. Hassan affiliated with?
Dr. Hassan practices at UCI Health - Fountain Valley in Fountain Valley, California. Dr. Hassan is also affiliated with UCI Health - Orange. Dmand AI links Dr. Hassan to 1 more hospital.
What medical group is Dr. Reham A. Hassan part of?
Dr. Hassan is linked to Southern California Permanente Medical Group. Dmand AI links Dr. Hassan to 4 more medical groups.
Does Dr. Reham A. Hassan accept Medicare?
Yes. CMS data shows Dr. Hassan billed Medicare for 49 services in 2024, and Dr. Hassan accepts Medicare assignment.
How many Medicare patients does Dr. Reham A. Hassan see?
CMS counts 141 Medicare patients who saw Dr. Hassan in 2024, with an average age of 71.
Is Dr. Reham A. Hassan board certified?
Yes. Dr. Hassan is board certified in anesthesiology by the American Board of Anesthesiology.
Show 5 more questionsShow fewer questions
What services does Dr. Reham A. Hassan bill to Medicare?
In 2024, Dr. Hassan's most billed Medicare services were anesthesia (00731), anesthesia (00142) and anesthesia (00811).
Where did Dr. Reham A. Hassan go to medical school?
Dr. Hassan graduated from WesternU College of Osteopathic Medicine of the Pacific in 2003.
Has Dr. Reham A. Hassan received payments from drug or device companies?
CMS Open Payments shows $63 in general payments to Dr. Hassan from 3 companies from 2016 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Reham A. Hassan been practicing?
Dr. Hassan graduated from medical school in 2003, 23 years ago.
What insurance does Dr. Reham A. Hassan accept?
Dr. Hassan is in network with 13 carriers, including United Healthcare, Elevance and Aetna. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.
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