Dr. Margaret Marie Nambiar, MD
- Medicare services, 2024
- 379
- Medicare patients, 2024
- 140
- Part D claims, 2024
- 2,132
- Industry payments
- $960
- Affiliated sites
- 1
- Practice address
- 2390 E Florida Ave, Hemet, CA 92544
- Practice phone
- Call (951) 652-6100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
California Cataract Center & Medical Group Inc
Hemet, California
Find Dr. Nambiar'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. Margaret Marie Nambiar is an ophthalmologist in Hemet, California
Dr. Nambiar practices at California Cataract Center & Medical Group Inc in Hemet, California.
Dr. Nambiar's NPI, 1043292030, was assigned on November 16, 2005. Dr. Nambiar graduated from University of Wisconsin-Madison in 1980. Dr. Nambiar holds California license G62036.
- NPI
- 1043292030NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4082748181
- NPI enumeration date
- November 16, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (951) 652-6100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Margaret Marie Nambiar practices at California Cataract Center & Medical Group Inc in Hemet, California
Dr. Nambiar's primary practice is California Cataract Center & Medical Group Inc, at 2390 E Florida Ave, Hemet, CA 92544 in Riverside County. The practice phone is (951) 652-6100.
- California Cataract Center & Medical Group Inc2390 E Florida Ave, Hemet, CA 92544 · Riverside CountyPhone(951) 652-6100
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Margaret Marie Nambiar is affiliated with 2 sites of care and 1 medical group
Dr. Nambiar's primary practice is California Cataract Center & Medical Group Inc in Hemet, California. Dmand AI also links Dr. Nambiar to 1 group practice or clinic and 1 medical group, 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 Dr. Margaret Marie Nambiar's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nambiar practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| California Cataract Center & Medical Group Inc | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Margaret Marie Nambiar is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Nambiar's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Nambiar is board certified in ophthalmology by the American Board of Ophthalmology. Dmand AI has Dr. Nambiar's licenses on file in 6 states: California, Michigan, New Jersey, Wisconsin, Pennsylvania and Louisiana.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
- Michigan license
- New Jersey license
- Wisconsin license
- Pennsylvania license
- Louisiana license
Clinical focus
Dmand AI lists cataract, cataract surgery with lens implant, cold sores or genital herpes, conjunctivitis, dry eye, eyelid inflammation, glaucoma and hereditary corneal conditions among the conditions Dr. Nambiar treats.
Ophthalmologists near Dr. Nambiar
Counts of ophthalmologists 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. Margaret Marie Nambiar billed Medicare for 379 services in 2024
CMS data shows 379 Medicare services from Dr. Nambiar across 9 procedure codes in 2024, for 140 Medicare patients. Medicare paid $19,752 for them. Every service was in an office.
Dr. Nambiar's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2282024: 19216%
- Tests and treatments
- 2023: 1652024: 18713%
- Surgery
- 2023: 162024: 0100%
Dr. Nambiar compared with the California median for ophthalmologists, 2024
- Dr. Nambiar
- California median
- Medicare services
- 379vs 1,07965% below
- Medicare patients
- 140vs 42167% below
- Part D claims
- 2,049vs 6183.3 times
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Nambiar'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. Nambiar?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nambiar and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Margaret Marie Nambiar treated 140 Medicare patients in 2024, average age 77
CMS counts 140 Medicare patients who saw Dr. Nambiar in 2024. The largest group is 75 to 84, with 61 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 41% are also on Medicaid. Their average risk score is 1.52, 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. Nambiar's median patient age at 75, with 60% women.
Dr. Nambiar's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Nambiar's Medicare patients by sex, 2024
- Women8561%
- Men5539%
Chronic conditions among Dr. Nambiar's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes55%
- Arthritis34%
- Chronic kidney disease27%
- Mood disorders25%
- Depression24%
- Ischemic heart disease24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nambiar's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Margaret Marie Nambiar wrote 2,132 Medicare Part D claims in 2024
In 2024, Dr. Nambiar wrote 2,132 Medicare Part D claims for 562 patients. 71% of them were for generic drugs. CMS names the drug for 2,049 of them, across 13 drugs with 11 or more claims each, at $41,128 in total drug cost. In 2023, CMS named 2,116 claims across 13 drugs.
Dr. Nambiar's Part D claims by kind of drug, 2024
- Generic1,506 claims71%
- Brand-name626 claims29%
Dr. Nambiar'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2,1162024: 2,0493%
Drugs named by CMS: 13 in 2024, 13 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
How Dr. Margaret Marie Nambiar takes part in Medicare
Dr. Nambiar accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Cataract surgery: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Margaret Marie Nambiar received $960 in industry payments from 2016 to 2025
CMS Open Payments shows 39 general payments to Dr. Nambiar from 10 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $465.
General payments to Dr. Nambiar by program year, 2016 to 2025
General payments to Dr. Nambiar by kind, 2016 to 2025
- Food and beverage$960100%
- Education$00%
Companies that paid Dr. Nambiar 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. Margaret Marie Nambiar has 1 award and honors on record
Dmand AI lists 1 award for Dr. Nambiar, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Nambiar
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Margaret Marie Nambiar graduated from University of Wisconsin-Madison
Dr. Nambiar graduated from University of Wisconsin-Madison in 1980.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Margaret Marie Nambiar accepts plans from 16 insurance carriers
Dr. Nambiar 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
- Blue Cross Blue Shield of Massachusetts
- Elevance
- HCSC
- Humana
- Molina
- +8 more carriersWith a free account
Plan types Dr. Nambiar accepts, by number of carriers
- PPO10
- HMO9
- Medicare9
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. Margaret Marie Nambiar'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| 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 Dr. Margaret Marie Nambiar
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. Margaret Marie Nambiar's NPI number?
Dr. Margaret Marie Nambiar's NPI number is 1043292030. It was assigned on November 16, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Margaret Marie Nambiar?
Dr. Margaret Marie Nambiar is an ophthalmologist in Hemet, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Margaret Marie Nambiar practice?
Dr. Nambiar practices at 2390 E Florida Ave, Hemet, CA 92544. Dr. Nambiar's primary practice is California Cataract Center & Medical Group Inc in Hemet, California. Dmand AI also links Dr. Nambiar to 1 group practice or clinic and 1 medical group.
What is Dr. Margaret Marie Nambiar's office phone number?
The practice phone on file for Dr. Nambiar is (951) 652-6100.
What is Dr. Margaret Marie Nambiar's medical license number?
Dr. Nambiar holds California license G62036, one of the licenses on file in 6 states.
Which states has Dr. Margaret Marie Nambiar been licensed in?
Dmand AI has state licenses on file for Dr. Nambiar in California (1987 to 2027), Michigan, New Jersey (1987 to 1993), Wisconsin (1989 to 1993), Pennsylvania (1986 to 1992) and Louisiana (1988 to 1991).
Does Dr. Margaret Marie Nambiar accept Medicare?
Yes. CMS data shows Dr. Nambiar billed Medicare for 379 services in 2024, and Dr. Nambiar accepts Medicare assignment.
How many Medicare patients does Dr. Margaret Marie Nambiar see?
CMS counts 140 Medicare patients who saw Dr. Nambiar in 2024, with an average age of 77.
Is Dr. Margaret Marie Nambiar board certified?
Yes. Dr. Nambiar is board certified in ophthalmology by the American Board of Ophthalmology.
What services does Dr. Margaret Marie Nambiar bill to Medicare?
In 2024, Dr. Nambiar's most billed Medicare services were office visit, established patient (99213), eye exam or test (92250) and eye exam or test (92133).
Show 5 more questionsShow fewer questions
Where did Dr. Margaret Marie Nambiar go to medical school?
Dr. Nambiar graduated from University of Wisconsin-Madison in 1980.
What drugs does Dr. Margaret Marie Nambiar prescribe most?
In 2024 Medicare Part D data, Dr. Nambiar's most prescribed drugs by claims were Latanoprost, Timolol Maleate and Tobramycin-Dexamethasone.
Has Dr. Margaret Marie Nambiar received payments from drug or device companies?
CMS Open Payments shows $960 in general payments to Dr. Nambiar from 10 companies from 2016 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Dr. Margaret Marie Nambiar been practicing?
Dr. Nambiar graduated from medical school in 1980, 46 years ago.
What insurance does Dr. Margaret Marie Nambiar accept?
Dr. Nambiar 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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