Alfred B. Johnson, MD
Surgery Physician · Merced, CA
Alfred B. Johnson, MD is a surgery physician with a practice address in Merced, California, and NPI 1174508865, issued on Dec 14, 2005. Check the license (California G88950, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alfred B. Johnson
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License numbers
- G88950 CA
42860 GA
19035 MS
184876 NY
Self-reported in NPPES; status is on the state search - Practice location
- 240 E 13TH St Ste C, Merced, CA 95341
- Phone
- (209) 723-2799
- Enumerated
- Dec 14, 2005
- Record last updated
- Jul 21, 2025
- Fax
- (209) 723-2984
- Medicare enrollment
- Enrolled (PECOS I20130207000182); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 1987
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Verify Alfred B. Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G88950Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average surgery physician in 2024
56 Medicare Part D claims for 23 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D.
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): 96.5 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.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $30.34
1 payment: food and beverage; the largest payer was Intuitive Surgical, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 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 2 group practices
- Crescent Wound Care IncModesto, CA
- Yosemite Bone And Joint, Inc.Modesto, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alfred B. Johnson among 3,118 surgery physician records in California
Alfred B. Johnson, MD is one of 3,118 surgery physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1987 · median 2003 among the 1,901 with a school on file
- Record last updated2025 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
All 3,118 in California → Every provider in Merced → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Nadir Adam, MDMerced, CA 953401760747398
- Ibrahim Azer, MDMerced, CA 953401093979205
- Adrian Fedele, M.D.Merced, CA 953401407945017
- Jennifer McEvoy, MDMerced, CA 953401275673766
- Kenichi Miyata, MDMerced, CA 953401376687772
- Richard Robinson, MDMerced, CA 953401427033836
- Thomas Field, MDManteca, CA 953371487732293
- Anita Gambhir, MDManteca, CA 953371699853507
Common questions
What is Alfred B. Johnson, MD's NPI number?
Alfred B. Johnson, MD's National Provider Identifier (NPI) is 1174508865, issued on Dec 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Alfred B. Johnson, MD located?
The NPPES record lists a practice address at 240 E 13TH St Ste C, Merced, CA, 95341. Phone: (209) 723-2799. Providers update this record themselves, so call before visiting.
How can I verify Alfred B. Johnson, MD's license?
NPPES lists California license number G88950, 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 Alfred B. Johnson, MD prescribe under Medicare Part D?
In 2024, Alfred B. Johnson, MD had 56 Medicare Part D claims for 23 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.
What is Alfred B. Johnson, MD's MIPS final score?
The 2023 MIPS final score is 96.5 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.