Glutamate DecarboxylaseSeizuresStress, Physiological
Dr. Saba Merchant Ziaee, MD
NPI1396004107PAC ID5193031847
- Medicare services, 2024
- 1,489
- Medicare patients, 2024
- 216
- Part D claims, 2024
- 967
- Publications
- 1
- MIPS score, 2024
- 95
- Practice address
- 5201 Norris Canyon Road, Suite 100, San Ramon, CA 94583
- Practice phone
- Call (925) 937-0605
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
The Tresanti Surgical Center
Surgery Center - Medicare-Certified · San Ramon, California
Find Dr. Ziaee's professional email, personal email and mobile number
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Dr. Saba Merchant Ziaee is a rheumatologist in San Ramon, California
Dr. Ziaee practices at The Tresanti Surgical Center in San Ramon, California.
Dr. Ziaee's NPI, 1396004107, was assigned on May 14, 2012. Dr. Ziaee graduated from Rush Medical College in 2012. Dr. Ziaee's California license number on file is A129365.
NPI and contact details
- NPI
- 1396004107NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5193031847
- NPI enumeration date
- May 14, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (925) 937-0605
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 34
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Saba Merchant Ziaee practices at The Tresanti Surgical Center in San Ramon, California
Dr. Ziaee's primary practice is The Tresanti Surgical Center, at 5201 Norris Canyon Road, Suite 100, San Ramon, CA 94583. The practice phone is (925) 937-0605.
- The Tresanti Surgical Center5201 Norris Canyon Road, Suite 100, San Ramon, CA 94583Phone(925) 937-0605
Source: Dmand AI Affiliation Data
Dr. Saba Merchant Ziaee is affiliated with 5 sites of care and 1 medical group
Dr. Ziaee's primary practice is The Tresanti Surgical Center in San Ramon, California. Dr. Ziaee is also affiliated with San Ramon Regional Medical Center. The medical group on file is Northern California Arthritis Center. Dmand AI also links Dr. Ziaee to 2 more hospitals and 1 group practice or clinic, each named with a free account.
The Tresanti Surgical CenterPrimary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Saba Merchant Ziaee's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ziaee practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The Tresanti Surgical Center | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Saba Merchant Ziaee is one of 821 rheumatologists in California
Rheumatology is Dr. Ziaee's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Ziaee is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Ziaee's licenses on file in 2 states: California and Illinois.
Specialties and state licenses
- Rheumatology, CaliforniaPrimary
- Illinois license
Clinical focus
Dmand AI lists arteritis, arthritis, fibromyalgia and chronic pain, fluid in a joint, gout, joint cyst, joint pain and muscle disease among the conditions Dr. Ziaee treats.
Rheumatologists near Dr. Ziaee
Counts of rheumatologists with a Dmand AI profile, by place and practice. Each opens the list.
821rheumatologists in California
3rheumatologists in San Ramon
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Saba Merchant Ziaee billed Medicare for 1,489 services in 2024
CMS data shows 1,489 Medicare services from Dr. Ziaee across 11 procedure codes in 2024, for 216 Medicare patients. Medicare paid $98,718 for them. Every service was in an office.
Medicare services, 20241,489
Medicare patients216
Paid by Medicare$98,718
Procedure codes11
Dr. Ziaee's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4872024: 60224%
- Other services
- 2023: 02024: 534
- Tests and treatments
- 2023: 992024: 17274%
- Drugs given in the office
- 2023: 1082024: 12819%
- Surgery
- 2023: 152024: 38153%
- Imaging
- 2023: 02024: 15
Dr. Ziaee compared with the California median for rheumatologists, 2024
- Dr. Ziaee
- California median
- Medicare services
- 1,489vs 90065% above
- Medicare patients
- 216vs 216Close to median
- Part D claims
- 829vs 96214% below
Medians across 773 rheumatologists in California with Dmand AI profiles that report each measure.
Dr. Ziaee'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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Saba Merchant Ziaee treated 216 Medicare patients in 2024, average age 74
CMS counts 216 Medicare patients who saw Dr. Ziaee in 2024. The largest group is 65 to 74, with 99 patients. 75% of them have arthritis, and 75% have high cholesterol. 19% are also on Medicaid. Their average risk score is 1.05, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ziaee's median patient age at 61, with 76% women.
Medicare patients, 2024216
Average age74
Average risk score1.05
Also on Medicaid19%
Dr. Ziaee's Medicare patients by age, 2024
Dr. Ziaee's Medicare patients by sex, 2024
- Women14668%
- Men7032%
Chronic conditions among Dr. Ziaee's Medicare patients, 2024
- Arthritis75%
- High cholesterol75%
- High blood pressure70%
- Osteoporosis30%
- Chronic kidney disease21%
- Diabetes19%
- Mood disorders19%
- Asthma18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ziaee's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women76%
- Men22%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Saba Merchant Ziaee wrote 967 Medicare Part D claims in 2024
In 2024, Dr. Ziaee wrote 967 Medicare Part D claims for 206 patients. 83% of them were for generic drugs. CMS names the drug for 829 of them, across 20 drugs with 11 or more claims each, at $487,098 in total drug cost. In 2023, CMS named 557 claims across 15 drugs.
Part D claims, 2024967
Drugs named by CMS20
Total drug cost$487,098
Part D patients206
Dr. Ziaee's Part D claims by kind of drug, 2024
- Generic801 claims83%
- Brand-name and other166 claims17%
Dr. Ziaee'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. Ziaee's Part D claims, 2024
- Opioids3%28 of 967 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: 5572024: 82949%
Drugs named by CMS: 20 in 2024, 15 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. Saba Merchant Ziaee scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Ziaee for performance year 2024, reported individually. Dr. Ziaee accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Ziaee as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Ziaee's MIPS scores, performance year 2024
- 95of 100Final score
- 90.8of 100Quality
- 96of 100Promoting Interoperability
- 40of 100Improvement Activities
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. Saba Merchant Ziaee has 1 publication on record
Dmand AI links 1 paper to Dr. Ziaee in 2018.
Papers1
Recent publications by Dr. Ziaee
See who Dr. Ziaee researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ziaee 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. Saba Merchant Ziaee received $7,786 in industry payments from 2018 to 2025
CMS Open Payments shows 396 general payments to Dr. Ziaee from 30 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 99% of the total. Amgen Inc. paid the most, $1,484.
General payments to Dr. Ziaee by program year, 2018 to 2025
General payments to Dr. Ziaee by kind, 2018 to 2025
$7.8Kin total
- Food and beverage$7,72799%
- Education$591%
Companies that paid Dr. Ziaee the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Saba Merchant Ziaee graduated from Rush Medical College
Dr. Ziaee graduated from Rush Medical College in 2012.
- Medical school
- Board certified in internal medicine
- Board certified in rheumatology
Source: Dmand AI Professional Profile Data
Dr. Saba Merchant Ziaee accepts plans from 16 insurance carriers
Dr. Ziaee is in network with 16 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Humana
- Regence Health Plans
- +8 more carriersWith a free account
Plan types Dr. Ziaee accepts, by number of carriers
- PPO10
- Medicare9
- HMO6
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. Saba Merchant Ziaee'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) |
| 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. Saba Merchant Ziaee
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. Saba Merchant Ziaee's NPI number?
Dr. Saba Merchant Ziaee's NPI number is 1396004107. It was assigned on May 14, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Saba Merchant Ziaee?
Dr. Saba Merchant Ziaee is a rheumatologist in San Ramon, California. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Saba Merchant Ziaee practice?
Dr. Ziaee practices at 5201 Norris Canyon Road, Suite 100, San Ramon, CA 94583. Dr. Ziaee's primary practice is The Tresanti Surgical Center in San Ramon, California. Dmand AI also links Dr. Ziaee to 2 hospitals and 1 group practice or clinic.
What is Dr. Saba Merchant Ziaee's office phone number?
The practice phone on file for Dr. Ziaee is (925) 937-0605.
What is Dr. Saba Merchant Ziaee's medical license number?
Dr. Ziaee's California license number on file is A129365, one of the licenses on file in 2 states.
Which states has Dr. Saba Merchant Ziaee been licensed in?
Dmand AI has state licenses on file for Dr. Ziaee in California (2014 to 2025) and Illinois (2015 to 2020).
Which hospitals is Dr. Saba Merchant Ziaee affiliated with?
Dr. Ziaee is affiliated with San Ramon Regional Medical Center. Dmand AI links Dr. Ziaee to 2 more hospitals.
What medical group is Dr. Saba Merchant Ziaee part of?
Dr. Ziaee is linked to Northern California Arthritis Center.
Does Dr. Saba Merchant Ziaee accept Medicare?
Yes. CMS data shows Dr. Ziaee billed Medicare for 1,489 services in 2024, and Dr. Ziaee accepts Medicare assignment.
Does Dr. Saba Merchant Ziaee offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Ziaee as offering telehealth services.
Show 10 more questionsShow fewer questions
What is Dr. Saba Merchant Ziaee's MIPS score?
Dr. Ziaee's MIPS final score for performance year 2024 is 95 out of 100, reported individually.
How many Medicare patients does Dr. Saba Merchant Ziaee see?
CMS counts 216 Medicare patients who saw Dr. Ziaee in 2024, with an average age of 74.
Is Dr. Saba Merchant Ziaee board certified?
Yes. Dr. Ziaee is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Saba Merchant Ziaee bill to Medicare?
In 2024, Dr. Ziaee's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and injected or infused drug (J3301).
Where did Dr. Saba Merchant Ziaee go to medical school?
Dr. Ziaee graduated from Rush Medical College in 2012.
What drugs does Dr. Saba Merchant Ziaee prescribe most?
In 2024 Medicare Part D data, Dr. Ziaee's most prescribed drugs by claims were Hydroxychloroquine Sulfate, Methotrexate and Prednisone.
Has Dr. Saba Merchant Ziaee received payments from drug or device companies?
CMS Open Payments shows $7,786 in general payments to Dr. Ziaee from 30 companies from 2018 to 2025. The largest total came from Amgen Inc.
How long has Dr. Saba Merchant Ziaee been practicing?
Dr. Ziaee graduated from medical school in 2012, 14 years ago.
Does Dr. Saba Merchant Ziaee do research?
Dmand AI links 1 publication to Dr. Ziaee.
What insurance does Dr. Saba Merchant Ziaee accept?
Dr. Ziaee is in network with 16 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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