Calvin E. Tan, OD
- Medicare patients, 2024
- 13
- Part D claims, 2024
- 58
- Hospital affiliations
- 1
- Medical groups
- 2
- State license
- 1
- Practice address
- 25825 South Vermont Avenue, Harbor City, CA 90710
- Practice phone
- Call (310) 325-5111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Calvin Tan'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.
Calvin E. Tan is an optometrist in Harbor City, California
Calvin Tan practices at Kaiser Permanente South Bay Medical Center in Harbor City, California, part of Kaiser Permanente.
Calvin Tan's NPI, 1043507643, was assigned on July 3, 2011. Calvin Tan graduated from State University of New York - State College Optometry in 2011. Calvin Tan holds California license 14313TLG.
- NPI
- 1043507643NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0749444289
- NPI enumeration date
- July 3, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (310) 325-5111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Calvin E. Tan practices at Kaiser Permanente South Bay Medical Center in Harbor City, California
Calvin Tan's primary practice is Kaiser Permanente South Bay Medical Center, at 25825 South Vermont Avenue, Harbor City, CA 90710 in Los Angeles County. The practice phone is (310) 325-5111.
- Kaiser Permanente South Bay Medical Center25825 South Vermont Avenue, Harbor City, CA 90710 · Los Angeles CountyPhone(310) 325-5111
Source: Dmand AI Affiliation Data
Calvin E. Tan is affiliated with 3 sites of care and 2 medical groups
Calvin Tan's primary practice is Kaiser Permanente South Bay Medical Center in Harbor City, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Calvin Tan to 2 more 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 Calvin E. Tan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Calvin Tan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente South Bay Medical Center | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Calvin E. Tan is one of 7,206 optometrists in California
Optometrist is Calvin Tan's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Calvin Tan is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near Calvin Tan
Counts of optometrists 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
Calvin E. Tan treated 13 Medicare patients in 2024, average age 64
CMS counts 13 Medicare patients who saw Calvin Tan in 2024. Their average risk score is 0.84, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Calvin Tan's median patient age at 54, with 66% women.
Calvin Tan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women66%
- Men34%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Calvin E. Tan wrote 58 Medicare Part D claims in 2024
In 2024, Calvin Tan wrote 58 Medicare Part D claims for 19 patients. 47% of them were for generic drugs.
Calvin Tan's Part D claims by kind of drug, 2024
- Generic27 claims47%
- Brand-name31 claims53%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Calvin E. Tan takes part in Medicare
Calvin Tan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Calvin E. Tan graduated from State University of New York - State College Optometry
Calvin Tan graduated from State University of New York - State College Optometry in 2011.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Calvin E. Tan'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 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 (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) |
| Training, board certification and memberships | Dmand AI Professional Profile 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 Calvin E. Tan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Calvin E. Tan's NPI number?
Calvin E. Tan's NPI number is 1043507643. It was assigned on July 3, 2011, and it is active in the NPI Registry.
What does Calvin E. Tan specialize in?
Calvin E. Tan is an optometrist in Harbor City, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Calvin E. Tan practice?
Calvin Tan practices at 25825 South Vermont Avenue, Harbor City, CA 90710. Calvin Tan's primary practice is Kaiser Permanente South Bay Medical Center in Harbor City, California, part of Kaiser Permanente. Dmand AI also links Calvin Tan to 2 group practices and clinics and 1 medical group.
What is Calvin E. Tan's office phone number?
The practice phone on file for Calvin Tan is (310) 325-5111.
What is Calvin E. Tan's medical license number?
Calvin Tan holds California license 14313TLG.
Which hospitals is Calvin E. Tan affiliated with?
Calvin Tan practices at Kaiser Permanente South Bay Medical Center in Harbor City, California.
What medical group is Calvin E. Tan part of?
Calvin Tan is linked to Southern California Permanente Medical Group. Dmand AI links Calvin Tan to 1 more medical group.
Does Calvin E. Tan accept Medicare?
Yes. CMS lists Calvin Tan as accepting Medicare assignment.
How many Medicare patients does Calvin E. Tan see?
CMS counts 13 Medicare patients who saw Calvin Tan in 2024, with an average age of 64.
Where did Calvin E. Tan go to medical school?
Calvin Tan graduated from State University of New York - State College Optometry in 2011.
How long has Calvin E. Tan been practicing?
Calvin Tan graduated from medical school in 2011, 15 years ago.
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