John William Hallisey, M.D.
Ophthalmology Physician · San Luis Obispo, CA
John William Hallisey, M.D. is an ophthalmology physician with a practice address in San Luis Obispo, California, and NPI 1467500686, issued on Jan 5, 2007. Check the license (California G25366, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John William Hallisey
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- G25366 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1270 Peach St, San Luis Obispo, CA 93401
- Phone
- (805) 541-1342
- Enumerated
- Jan 5, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (805) 541-5836
- Medicaid ID
- 00G253660 CA
- Medicare enrollment
- Enrolled (PECOS I20050128000889); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 1972
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 1270 Peach St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Limberg, M.D.Ophthalmology Physician1063569655
- Thomas Rippner, O.D.Optometrist1578613451
Verify John William Hallisey in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G25366Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average ophthalmology physician in 2024
349 Medicare Part D claims for 70 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.
Most prescribed
- Latanoprost144 claims
- Dorzolamide-Timolol58 claims
- Timolol Maleate24 claims
- Brimonidine Tartrate19 claims
- Cyclosporine18 claims
- Brimonidine Tartrate-Timolol12 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
- Limberg Eye Surgery A Medical CorporationSan Luis Obispo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John William Hallisey among 2,899 ophthalmology physician records in California
John William Hallisey, M.D. 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 2007, is newer than 55% of them.
- NPI issued2007 · 55% of these records are older, 33% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1972 · median 2001 among the 1,907 with a school on file
- Record last updated2007 · 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).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in San Luis Obispo → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Daniel Agarwal, M.D.San Luis Obispo, CA 934011811230766
- Jawad Ahmad, MDSan Luis Obispo, CA 934011841797248
- Larry Baldwin, M.D.San Luis Obispo, CA 934011205843786
- Robert Higginbotham, M.D.San Luis Obispo, CA 934011609878834
- Christopher Hulburd, M.D.San Luis Obispo, CA 934011437199916
- Steven Johnson, MDSan Luis Obispo, CA 934011679581581
- Michael Limberg, M.D.San Luis Obispo, CA 934011063569655
- William McRee, MDSan Luis Obispo, CA 934011215945126
Common questions
What is John William Hallisey, M.D.'s NPI number?
John William Hallisey, M.D.'s National Provider Identifier (NPI) is 1467500686, issued on Jan 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John William Hallisey, M.D. located?
The NPPES record lists a practice address at 1270 Peach St, San Luis Obispo, CA, 93401. Phone: (805) 541-1342. Providers update this record themselves, so call before visiting.
How can I verify John William Hallisey, M.D.'s license?
NPPES lists California license number G25366, 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 John William Hallisey, M.D. prescribe under Medicare Part D?
In 2024, John William Hallisey, M.D. had 349 Medicare Part D claims for 70 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.