Hamid R. Rassai

  • Walnut Creek, CA
  • General surgeon
NPI1013013218PAC ID1850498742
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
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Personal email
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Mobile number
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Social profiles

Primary practice

Bay Area Surgical Specialist Services

Walnut Creek, California

See all 9 affiliations

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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 and contact details
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
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Mobile number
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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 Services
    460 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.

See all 9 affiliations for Hamid Rassai

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.

EHR by site
SiteEHR vendor and product
Bay Area Surgical Specialist ServicesAvailable with a free account
+5 more sites and 2 medical groupsAvailable 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, CaliforniaPrimaryLicense A060998 · 1996 to 2026 · taxonomy 208600000X

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.

Medicare services, 20241,357
Medicare patients220
Paid by Medicare$425,274
Procedure codes11

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.

See all procedures by Hamid Rassai

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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.

Medicare patients, 2024220
Average age74
Average risk score2.05
Also on Medicaid37%

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

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis59%
  4. Diabetes45%
  5. Chronic kidney disease34%
  6. Anxiety33%
  7. Mood disorders31%
  8. 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.

Part D claims, 202499
Drugs named by CMS2
Total drug cost$480
Part D patients57

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.

See all prescribing by Hamid Rassai

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.

Papers2

Hamid Rassai's most frequent co-authors

Recent publications by Hamid Rassai

See all 2 publications and co-authors

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.

How network discovery works

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.

See all payments to Hamid Rassai

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

  1. 2013
    • CMS Stage 1 EHR
  2. 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.

  1. Medical schoolMCP-Hahnemann College of Medicine
  2. Board certified in surgeryAmerican Board of 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

  1. Medicare9
  2. PPO7
  3. HMO5
  4. EPO4
  5. POS4

Source: Dmand AI Insurance Network Data

Sources for Hamid R. Rassai's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors 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-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand 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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