Kalaokalani Chandler, M.D.
Obstetrics & Gynecology Physician · Castro Valley, CA
Kalaokalani Chandler, M.D. is an obstetrics & gynecology physician with a practice address in Castro Valley, California, and NPI 1164459947, issued on Jun 27, 2006. Check the license (California A73204, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kalaokalani Chandler
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- A73204 CA
Self-reported in NPPES; status is on the state search - Practice location
- 20642 John Dr, Castro Valley, CA 94546
- Phone
- (510) 785-5000
- Enumerated
- Jun 27, 2006
- Record last updated
- Apr 12, 2023
- Fax
- (510) 974-2915
- Medicare enrollment
- Enrolled (PECOS I20040127000780); accepts Medicare assignment
- Medical or professional school
- Washington University School Of Medicine, 1999
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 in California → Look up another NPI →
Also registered at 20642 John Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Albert Ahoy, PA-CPhysician Assistant1356878136
- Ana BermudezObstetrics & Gynecology Physician1679079065
- Shiven Chaudhry, MDInternal Medicine Physician1528594801
- Corina Clark, P.A.Physician Assistant1720480049
- Ashley Etchison, MDDiagnostic Radiology Physician1962907840
- Samuel Fantaye, MDEndocrinology, Diabetes & Metabolism Physician1336677186
Verify Kalaokalani Chandler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A73204Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average obstetrics & gynecology physician in 2024
359 Medicare Part D claims for 116 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. 25 claims were for opioids.
Most prescribed
- Estradiol75 claims
- Medroxyprogesterone Acetate29 claims
- Premarin26 claims
- Clobetasol Propionate16 claims
- Oxycodone Hcl15 claims
- Acyclovir12 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.
Bills Medicare through one group practice
- University Healthcare AllianceSan Ramon, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kalaokalani Chandler among 5,088 obstetrics & gynecology physician records in California
Kalaokalani Chandler, M.D. is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 52% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1999 · median 2004 among the 2,700 with a school on file
- Record last updated2023 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California.
All 5,088 in California → Every provider in Castro Valley → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Ana BermudezCastro Valley, CA 945461679079065
- Murray Gould, M.D.Castro Valley, CA 945461619985025
- Garima Loharuka, D.O.Castro Valley, CA 945461972897478
- Radhika Madhavan, MDCastro Valley, CA 945461457513053
- Michael McGlynn, MDCastro Valley, CA 945461730255332
- Baotram Nguyen, M.D.Castro Valley, CA 945461255607727
- Samuel Santoro, DOCastro Valley, CA 945461013023795
- Anna Maria Sapugay, MDCastro Valley, CA 945461972514966
Common questions
What is Kalaokalani Chandler, M.D.'s NPI number?
Kalaokalani Chandler, M.D.'s National Provider Identifier (NPI) is 1164459947, issued on Jun 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kalaokalani Chandler, M.D. located?
The NPPES record lists a practice address at 20642 John Dr, Castro Valley, CA, 94546. Phone: (510) 785-5000. Providers update this record themselves, so call before visiting.
How can I verify Kalaokalani Chandler, M.D.'s license?
NPPES lists California license number A73204, 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 Kalaokalani Chandler, M.D. prescribe under Medicare Part D?
In 2024, Kalaokalani Chandler, M.D. had 359 Medicare Part D claims for 116 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.