Dr. Tanzina Nasreen, MD
- Medicare services, 2024
- 1,856
- Medicare patients, 2024
- 193
- Part D claims, 2024
- 1,515
- Hospital affiliations
- 2
- Industry payments
- $447
- Practice address
- 12665 Garden Grove Blvd, No 401, Garden Grove, CA 92843
- Practice phone
- Call (714) 534-8373
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Orange County Eye Surgical Center
Surgery Center - Medicare-Certified · Garden Grove, California
Find Dr. Nasreen'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. Tanzina Nasreen is a nephrologist in Garden Grove, California
Dr. Nasreen practices at Orange County Eye Surgical Center in Garden Grove, California.
Dr. Nasreen's NPI, 1649454638, was assigned on December 26, 2007. Dr. Nasreen holds California license A92620.
- NPI
- 1649454638NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1153480587
- NPI enumeration date
- December 26, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (714) 534-8373
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Tanzina Nasreen practices at Orange County Eye Surgical Center in Garden Grove, California
Dr. Nasreen's primary practice is Orange County Eye Surgical Center, at 12665 Garden Grove Blvd, No 401, Garden Grove, CA 92843. The practice phone is (714) 534-8373.
- Orange County Eye Surgical Center12665 Garden Grove Blvd, No 401, Garden Grove, CA 92843Phone(714) 534-8373
Source: Dmand AI Affiliation Data
Dr. Tanzina Nasreen is affiliated with 9 sites of care and 2 medical groups
Dr. Nasreen's primary practice is Orange County Eye Surgical Center in Garden Grove, California. Dr. Nasreen is also affiliated with UCI Health - Orange. The medical group on file is Southern California Kidney Consultants. Dmand AI also links Dr. Nasreen to 1 more hospital, 4 dialysis centers, 2 group practices and clinics and 1 medical group, 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. Tanzina Nasreen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nasreen practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Orange County Eye Surgical Center | Available with a free account |
| +8 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Tanzina Nasreen is one of 1,401 nephrologists in California
Nephrology is Dr. Nasreen's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Nasreen is licensed in California.
Specialties and state licenses
- Nephrology, CaliforniaPrimary
Nephrologists near Dr. Nasreen
Counts of nephrologists 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. Tanzina Nasreen billed Medicare for 1,856 services in 2024
CMS data shows 1,856 Medicare services from Dr. Nasreen across 10 procedure codes in 2024, for 193 Medicare patients. Medicare paid $169,402 for them.
Dr. Nasreen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,4382024: 1,5679%
- Tests and treatments
- 2023: 2072024: 23011%
- Other services
- 2023: 02024: 59
Where Dr. Nasreen's Medicare services took place, 2024
- In an office76041%
- In a facility1,09659%
Dr. Nasreen compared with the California median for nephrologists, 2024
- Dr. Nasreen
- California median
- Medicare services
- 1,856vs 1,08471% above
- Medicare patients
- 193vs 30737% below
- Part D claims
- 1,258vs 95532% above
Medians across 1,355 nephrologists in California with Dmand AI profiles that report each measure.
Dr. Nasreen'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. Nasreen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nasreen and other nephrologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Tanzina Nasreen treated 193 Medicare patients in 2024, average age 72
CMS counts 193 Medicare patients who saw Dr. Nasreen in 2024. The largest group is 65 to 74, with 73 patients. 75% of them have chronic kidney disease, and 75% have diabetes. 84% are also on Medicaid. Their average risk score is 5.54, 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. Nasreen's median patient age at 69, with 49% women.
Dr. Nasreen's Medicare patients by age, 2024
Dr. Nasreen's Medicare patients by sex, 2024
- Women10454%
- Men8946%
Chronic conditions among Dr. Nasreen's Medicare patients, 2024
- Chronic kidney disease75%
- Diabetes75%
- High blood pressure75%
- High cholesterol75%
- Heart failure63%
- Ischemic heart disease59%
- Arthritis47%
- Atrial fibrillation45%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nasreen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women49%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Tanzina Nasreen wrote 1,515 Medicare Part D claims in 2024
In 2024, Dr. Nasreen wrote 1,515 Medicare Part D claims for 187 patients. 81% of them were for generic drugs. CMS names the drug for 1,258 of them, across 39 drugs with 11 or more claims each, at $291,742 in total drug cost. In 2023, CMS named 1,193 claims across 38 drugs.
Dr. Nasreen's Part D claims by kind of drug, 2024
- Generic1,225 claims81%
- Brand-name and other290 claims19%
Dr. Nasreen'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. Nasreen's Part D claims, 2024
- Opioids1%18 of 1,515 claims
- Antibiotics3%49 of 1,515 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: 1,1932024: 1,2585%
Drugs named by CMS: 39 in 2024, 38 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. Tanzina Nasreen offers telehealth to Medicare patients
Dr. Nasreen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Nasreen as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Tanzina Nasreen received $447 in industry payments from 2016 to 2024
CMS Open Payments shows 7 general payments to Dr. Nasreen from 4 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $237.
General payments to Dr. Nasreen by program year, 2016 to 2024
Companies that paid Dr. Nasreen the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Tanzina Nasreen'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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Tanzina Nasreen
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. Tanzina Nasreen's NPI number?
Dr. Tanzina Nasreen's NPI number is 1649454638. It was assigned on December 26, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Tanzina Nasreen?
Dr. Tanzina Nasreen is a nephrologist in Garden Grove, California. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Tanzina Nasreen practice?
Dr. Nasreen practices at 12665 Garden Grove Blvd, No 401, Garden Grove, CA 92843. Dr. Nasreen's primary practice is Orange County Eye Surgical Center in Garden Grove, California. Dmand AI also links Dr. Nasreen to 1 hospital, 4 dialysis centers, 2 group practices and clinics and 1 medical group.
What is Dr. Tanzina Nasreen's office phone number?
The practice phone on file for Dr. Nasreen is (714) 534-8373.
What is Dr. Tanzina Nasreen's medical license number?
Dr. Nasreen holds California license A92620.
Which hospitals is Dr. Tanzina Nasreen affiliated with?
Dr. Nasreen is affiliated with UCI Health - Orange. Dmand AI links Dr. Nasreen to 1 more hospital.
What medical group is Dr. Tanzina Nasreen part of?
Dr. Nasreen is linked to Southern California Kidney Consultants. Dmand AI links Dr. Nasreen to 1 more medical group.
Does Dr. Tanzina Nasreen accept Medicare?
Yes. CMS data shows Dr. Nasreen billed Medicare for 1,856 services in 2024, and Dr. Nasreen accepts Medicare assignment.
Does Dr. Tanzina Nasreen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Nasreen as offering telehealth services.
How many Medicare patients does Dr. Tanzina Nasreen see?
CMS counts 193 Medicare patients who saw Dr. Nasreen in 2024, with an average age of 72.
Show 4 more questionsShow fewer questions
What services does Dr. Tanzina Nasreen bill to Medicare?
In 2024, Dr. Nasreen's most billed Medicare services were hospital inpatient care (99232), care management and other visits (99457) and hospital inpatient care (99233).
What drugs does Dr. Tanzina Nasreen prescribe most?
In 2024 Medicare Part D data, Dr. Nasreen's most prescribed drugs by claims were Farxiga, Sevelamer Carbonate and Amlodipine Besylate.
Has Dr. Tanzina Nasreen received payments from drug or device companies?
CMS Open Payments shows $447 in general payments to Dr. Nasreen from 4 companies from 2016 to 2024. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Tanzina Nasreen been practicing?
Dr. Nasreen graduated from medical school in 1998, 28 years ago.
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