NPPES file of Aug 9, 2026

Steven C. Johnson, MD

Ophthalmology Physician · San Luis Obispo, CA

Steven C. Johnson, MD is an ophthalmology physician with a practice address in San Luis Obispo, California, and NPI 1679581581, issued on Aug 4, 2006. Check the license (California A38558, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1679581581
Name
Steven C. Johnson
Credential
MD
Primary taxonomy
Ophthalmology Physician 207W00000X
License number
A38558 CA
Self-reported in NPPES; status is on the state search
Practice location
628 California Blvd, San Luis Obispo, CA 93401
Phone
(805) 547-2090
Enumerated
Aug 4, 2006
Record last updated
Dec 8, 2009 (not updated in 17 years: call before relying on the address or phone)
Fax
(805) 547-2095
Medicaid ID
00A385580 CA
Medicare enrollment
Enrolled (PECOS I20080303000760); accepts Medicare assignment
Medical or professional school
Southern Illinois University School Of Medicine, 1978
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 628 California Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Brian BolenbaughHearing Instrument Specialist1275958571
  2. Lawrence Fogel, MDNeurology Physician1649253162
  3. Kimberly Johnson, O.D.Optometrist1366595639
  4. Randall Lonsbrough, DDSProsthodontics1750397410
  5. Mark Sherman, MDOphthalmology Physician1326056235

Verify Steven C. Johnson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A38558
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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28% fewer Medicare Part D claims than the average ophthalmology physician in 2024

1,097 Medicare Part D claims for 255 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 42% of claims.

  1. Steven Johnson1,097
  2. Specialty average1,518

Most prescribed

  1. Latanoprost370 claims
  2. Timolol Maleate114 claims
  3. Prednisolone Acetate88 claims
  4. Neomycin-Polymyxin-Dexameth74 claims
  5. Brimonidine Tartrate67 claims
  6. Simbrinza47 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.

The MIPS final score for 2023 (Medicare payment program): 90.7 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score89.7
  2. Costout of 100 · 30%82.9
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $126.08

5 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. 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.

  1. Steven Johnson$126.08
  2. Specialty average$4,535.02

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Steven C. Johnson among 2,899 ophthalmology physician records in California

Steven C. Johnson, MD 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 2006, is newer than 9% of them.

  • NPI issued2006 · 9% of these records are older, 45% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated1978 · median 2001 among the 1,907 with a school on file
  • Record last updated2009 · 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.

The 8 ophthalmology physician records with the nearest ZIP codes

  1. Daniel Agarwal, M.D.San Luis Obispo, CA 934011811230766
  2. Jawad Ahmad, MDSan Luis Obispo, CA 934011841797248
  3. Larry Baldwin, M.D.San Luis Obispo, CA 934011205843786
  4. John Hallisey, M.D.San Luis Obispo, CA 934011467500686
  5. Robert Higginbotham, M.D.San Luis Obispo, CA 934011609878834
  6. Christopher Hulburd, M.D.San Luis Obispo, CA 934011437199916
  7. Michael Limberg, M.D.San Luis Obispo, CA 934011063569655
  8. William McRee, MDSan Luis Obispo, CA 934011215945126

Common questions

What is Steven C. Johnson, MD's NPI number?

Steven C. Johnson, MD's National Provider Identifier (NPI) is 1679581581, issued on Aug 4, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Steven C. Johnson, MD located?

The NPPES record lists a practice address at 628 California Blvd, San Luis Obispo, CA, 93401. Phone: (805) 547-2090. Providers update this record themselves, so call before visiting.

How can I verify Steven C. Johnson, MD's license?

NPPES lists California license number A38558, 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 Steven C. Johnson, MD prescribe under Medicare Part D?

In 2024, Steven C. Johnson, MD had 1,097 Medicare Part D claims for 255 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.

What is Steven C. Johnson, MD's MIPS final score?

The 2023 MIPS final score is 90.7 of 100. The average among 454,083 clinicians with a measured score was 83.5.

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.