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Hamid R. Rassai
- Medicare services, 2024
- 1,357
- Medicare patients, 2024
- 220
- Part D claims, 2024
- 99
- Publications
- 2
- MIPS score, 2024
- 97
- Practice address
- 460 N Wiget Ln, Walnut Creek, CA 94598
- Practice phone
- Call (202) 815-3665
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Bay Area Surgical Specialist Services
Walnut Creek, California
Find Hamid Rassai'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.
Hamid R. Rassai is a general surgeon in Walnut Creek, California
Hamid Rassai practices at Bay Area Surgical Specialist Services in Walnut Creek, California.
Hamid Rassai's NPI, 1013013218, was assigned on September 15, 2006. Hamid Rassai graduated from MCP-Hahnemann College of Medicine in 1995. Hamid Rassai holds California license A060998.
- NPI
- 1013013218NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1850498742
- NPI enumeration date
- September 15, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (202) 815-3665
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Hamid R. Rassai practices at Bay Area Surgical Specialist Services in Walnut Creek, California
Hamid Rassai's primary practice is Bay Area Surgical Specialist Services, at 460 N Wiget Ln, Walnut Creek, CA 94598 in Contra Costa County. The practice phone is (202) 815-3665.
- Bay Area Surgical Specialist Services460 N Wiget Ln, Walnut Creek, CA 94598 · Contra Costa CountyPhone(202) 815-3665
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Hamid R. Rassai is affiliated with 6 sites of care and 3 medical groups
Hamid Rassai's primary practice is Bay Area Surgical Specialist Services in Walnut Creek, California. Hamid Rassai is also affiliated with Concord Medical Center. The medical group on file is BASS Medical Group. Dmand AI also links Hamid Rassai to 1 more hospital, 2 group practices and clinics, 2 medical groups and 1 home health agency, 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 Hamid R. Rassai's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Hamid Rassai practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Bay Area Surgical Specialist Services | Available with a free account |
| +5 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Hamid R. Rassai is one of 2,926 general surgeons in California
Surgery is Hamid Rassai's primary specialty in the NPI Registry, under taxonomy code 208600000X. Hamid Rassai is board certified in surgery by the American Board of Surgery. Hamid Rassai is licensed in California.
Specialties and state licenses
- Surgery, CaliforniaPrimary
Clinical focus
Dmand AI lists abdominal hernia repair surgery, cancerous skin growth removal, gallbladder removal, groin hernia surgery, thyroid surgery and varicose vein treatment among the conditions Hamid Rassai treats.
General surgeons near Hamid Rassai
Counts of general surgeons 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
Hamid R. Rassai billed Medicare for 1,357 services in 2024
CMS data shows 1,357 Medicare services from Hamid Rassai across 11 procedure codes in 2024, for 220 Medicare patients. Medicare paid $425,274 for them.
Hamid Rassai's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 4332024: 55027%
- Office and hospital visits
- 2023: 5302024: 47111%
- Surgery
- 2023: 3622024: 3367%
Where Hamid Rassai's Medicare services took place, 2024
- In an office87665%
- In a facility48135%
Hamid Rassai compared with the California median for general surgeons, 2024
- Hamid Rassai
- California median
- Medicare services
- 1,357vs 1668.2 times
- Medicare patients
- 220vs 12182% above
- Part D claims
- 61vs 3479% above
Medians across 2,606 general surgeons in California with Dmand AI profiles that report each measure.
Hamid Rassai'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 Hamid Rassai?
Medicare shows one payer. Book a meeting to get commercial claims data for Hamid Rassai and other general surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Hamid R. Rassai treated 220 Medicare patients in 2024, average age 74
CMS counts 220 Medicare patients who saw Hamid Rassai in 2024. The largest group is 65 to 74, with 91 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 37% are also on Medicaid. Their average risk score is 2.05, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Hamid Rassai's median patient age at 66, with 56% women.
Hamid Rassai's Medicare patients by age, 2024
Hamid Rassai's Medicare patients by sex, 2024
- Women14064%
- Men8036%
Chronic conditions among Hamid Rassai's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis59%
- Diabetes45%
- Chronic kidney disease34%
- Anxiety33%
- Mood disorders31%
- Depression28%
Share of Medicare patients with each condition. A patient can have several.
Hamid Rassai's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women56%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Hamid R. Rassai wrote 99 Medicare Part D claims in 2024
In 2024, Hamid Rassai wrote 99 Medicare Part D claims for 57 patients. 97% of them were for generic drugs. CMS names the drug for 61 of them, across 2 drugs with 11 or more claims each, at $480 in total drug cost. In 2023, CMS named 40 claims across 2 drugs.
Hamid Rassai's Part D claims by kind of drug, 2024
- Generic96 claims97%
- Brand-name and other3 claims3%
Hamid Rassai'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 Hamid Rassai's Part D claims, 2024
- Opioids37%37 of 99 claims
- Antibiotics46%46 of 99 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: 402024: 6153%
Drugs named by CMS: 2 in 2024, 2 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
Hamid R. Rassai scored 97 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Hamid Rassai for performance year 2024, reported individually. Hamid Rassai accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 286 procedures of removal of tissue by Hamid Rassai, more than 94% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Hamid Rassai's MIPS scores, performance year 2024
- 97of 100Final score
- 77.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Hamid Rassai ranks in Medicare procedure volume
- Removal of tissue
- 94th percentile286 procedures
- Varicose vein removal
- 88th percentile157 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Hamid R. Rassai has 2 publications on record
Dmand AI links 2 papers to Hamid Rassai. Hamid Rassai's most frequent co-authors are Nathaniel M. Matolo, MD and Omar I. Mian, MD.
Hamid Rassai's most frequent co-authors
Recent publications by Hamid Rassai
See who Hamid Rassai researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Hamid Rassai works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Hamid R. Rassai received $1,603 in industry payments from 2016 to 2025
CMS Open Payments shows 66 general payments to Hamid Rassai from 23 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Smith & Nephew, Inc. paid the most, $320.
General payments to Hamid Rassai by program year, 2016 to 2025
Companies that paid Hamid Rassai the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Hamid R. Rassai has 2 awards and honors on record
Dmand AI lists 2 awards for Hamid Rassai, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Hamid Rassai
- 2013
- CMS Stage 1 EHR
- 2012
- ACS Fellow
Source: Dmand AI Professional Profile Data
Hamid R. Rassai graduated from MCP-Hahnemann College of Medicine
Hamid Rassai graduated from MCP-Hahnemann College of Medicine in 1995. Hamid Rassai is a member of ACS.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Hamid R. Rassai accepts plans from 12 insurance carriers
Hamid Rassai is in network with 12 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Alliant Health Plans
- +4 more carriersWith a free account
Plan types Hamid Rassai accepts, by number of carriers
- Medicare9
- PPO7
- HMO5
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Hamid R. Rassai'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 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)Doctors and Clinicians Utilization Data (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) |
| 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 Hamid R. Rassai
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Hamid R. Rassai's NPI number?
Hamid R. Rassai's NPI number is 1013013218. It was assigned on September 15, 2006, and it is active in the NPI Registry.
What does Hamid R. Rassai specialize in?
Hamid R. Rassai is a general surgeon in Walnut Creek, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Hamid R. Rassai practice?
Hamid Rassai practices at 460 N Wiget Ln, Walnut Creek, CA 94598. Hamid Rassai's primary practice is Bay Area Surgical Specialist Services in Walnut Creek, California. Dmand AI also links Hamid Rassai to 1 hospital, 2 group practices and clinics, 2 medical groups and 1 home health agency.
What is Hamid R. Rassai's office phone number?
The practice phone on file for Hamid Rassai is (202) 815-3665.
What is Hamid R. Rassai's medical license number?
Hamid Rassai holds California license A060998.
Which hospitals is Hamid R. Rassai affiliated with?
Hamid Rassai is affiliated with Concord Medical Center. Dmand AI links Hamid Rassai to 1 more hospital.
What medical group is Hamid R. Rassai part of?
Hamid Rassai is linked to BASS Medical Group. Dmand AI links Hamid Rassai to 2 more medical groups.
Does Hamid R. Rassai accept Medicare?
Yes. CMS data shows Hamid Rassai billed Medicare for 1,357 services in 2024, and Hamid Rassai accepts Medicare assignment.
What is Hamid R. Rassai's MIPS score?
Hamid Rassai's MIPS final score for performance year 2024 is 97 out of 100, reported individually.
How many Medicare patients does Hamid R. Rassai see?
CMS counts 220 Medicare patients who saw Hamid Rassai in 2024, with an average age of 74.
Show 9 more questionsShow fewer questions
Is Hamid R. Rassai board certified?
Yes. Hamid Rassai is board certified in surgery by the American Board of Surgery.
What services does Hamid R. Rassai bill to Medicare?
In 2024, Hamid Rassai's most billed Medicare services were office visit, established patient (99214), surgery: skin and soft tissue (11042) and blood vessel study (93971).
Where did Hamid R. Rassai go to medical school?
Hamid Rassai graduated from MCP-Hahnemann College of Medicine in 1995.
What drugs does Hamid R. Rassai prescribe most?
In 2024 Medicare Part D data, Hamid Rassai's most prescribed drugs by claims were Doxycycline Hyclate and Tramadol HCl.
Has Hamid R. Rassai received payments from drug or device companies?
CMS Open Payments shows $1,603 in general payments to Hamid Rassai from 23 companies from 2016 to 2025. The largest total came from Smith & Nephew, Inc.
How long has Hamid R. Rassai been practicing?
Hamid Rassai graduated from medical school in 1995, 31 years ago.
Does Hamid R. Rassai do research?
Dmand AI links 2 publications to Hamid Rassai.
Who does Hamid R. Rassai publish with?
Hamid Rassai's most frequent co-authors are Nathaniel M. Matolo, MD (1 shared paper) and Omar I. Mian, MD (1 shared paper).
What insurance does Hamid R. Rassai accept?
Hamid Rassai is in network with 12 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
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