Geraldine Slean
Ophthalmology Physician · Union City, CA
Geraldine Slean is an ophthalmology physician with a practice address in Union City, California, and NPI 1598185662, issued on Apr 16, 2014. Check the license (California A141033, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Geraldine Slean
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- A141033 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3553 Whipple RD Bldg B, Union City, CA 94587
- Phone
- (510) 675-2020
- Enumerated
- Apr 16, 2014
- Record last updated
- Oct 22, 2022
- Medicare enrollment
- Enrolled (PECOS I20190717002238); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 2014
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 3553 Whipple RD Bldg B
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Isabella Brown-Quigley, AUDAudiologist1518839661
- Trisha Garcia-Herron, O.D.Optometrist1881745529
- Vicki Hughes, O.D.Optometrist1639220585
- Stephanie Adeline Larchuleta Smith, M.S., CCC-SLPSpeech-Language Pathologist1538225081
- Joy Leong, RCP, RRTRegistered Respiratory Therapist1801402805
- Lucia Meza Castro, M.S., CCC-SLPSpeech-Language Pathologist1790187292
Verify Geraldine Slean in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A141033Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average ophthalmology physician in 2024
1,239 Medicare Part D claims for 420 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 36% of claims.
Most prescribed
- Latanoprost304 claims
- Prednisolone Acetate182 claims
- Dorzolamide-Timolol142 claims
- Erythromycin116 claims
- Ofloxacin96 claims
- Brimonidine Tartrate81 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $472.03
3 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Sutter Valley Medical FoundationVacaville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Geraldine Slean among 2,899 ophthalmology physician records in California
Geraldine Slean is one of 2,899 ophthalmology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 82% of them.
- NPI issued2014 · 82% of these records are older, 16% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2014 · median 2001 among the 1,907 with a school on file
- Record last updated2022 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
15 ophthalmology physician records list a practice address in Union City
They are 15 of the 1,006 NPPES records with a practice address in Union City, and 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Union City → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Kristina Austin, M.D.Union City, CA 945871417007238
- John Chan, M.D.Union City, CA 945871609928837
- Sung Choe, M.D.Union City, CA 945871689752446
- Kari Eisley, M.D.Union City, CA 945871457558884
- Michael Fang-Yen, M.D.Union City, CA 945871366520868
- Franklin Jeng, MDUnion City, CA 945871316560782
- Catherine Knox, M.D.Union City, CA 945871013095652
- James Lahey, M.D.Union City, CA 945871285712042
Common questions
What is Geraldine Slean's NPI number?
Geraldine Slean's National Provider Identifier (NPI) is 1598185662, issued on Apr 16, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Geraldine Slean located?
The NPPES record lists a practice address at 3553 Whipple RD Bldg B, Union City, CA, 94587. Phone: (510) 675-2020. Providers update this record themselves, so call before visiting.
How can I verify Geraldine Slean's license?
NPPES lists California license number A141033, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Geraldine Slean prescribe under Medicare Part D?
In 2024, Geraldine Slean had 1,239 Medicare Part D claims for 420 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.