Mary Elizabeth Johnson, MD
Emergency Medicine Physician · San Francisco, CA
Mary Elizabeth Johnson, MD is an emergency medicine physician with a practice address in San Francisco, California, and NPI 1902887227, issued on Nov 14, 2005. Check the license (California A75167, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mary Elizabeth Johnson
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A75167 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2333 Buchanan St, San Francisco, CA 94115
- Phone
- (209) 342-2300
- Enumerated
- Nov 14, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (209) 524-4240
- Medicaid ID
- 00A751670 CA
- Medicare enrollment
- Enrolled (PECOS I20040521001017); accepts Medicare assignment
- Medical or professional school
- University Of Oklahoma College Of Medicine, 1999
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 2333 Buchanan St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Rashi Agarwal, M.B.B.S.Student in an Organized Health Care Education/Training Program1376981878
- Stephen Anderka, MDEmergency Medicine Physician1083605455
- Steven Ansley, MDEmergency Medicine Physician1851382378
- Jennifer Beachey, M.D.Internal Medicine Physician1285657049
- Robert Bowyer, DOEmergency Medicine Physician1144211517
Verify Mary Elizabeth Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A75167Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% fewer Medicare Part D claims than the average emergency medicine physician in 2024
153 Medicare Part D claims for 109 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Azithromycin22 claims
- Cephalexin22 claims
- Cefuroxime14 claims
- Amoxicillin-Clavulanate Potass13 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: $150.19
1 payment: food and beverage; the largest payer was Dexcom, Inc. The 12,335 providers of this specialty with any payment received $953.79 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
- Scripps HealthLa Jolla, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Elizabeth Johnson among 7,751 emergency medicine physician records in California
Mary Elizabeth Johnson, MD is one of 7,751 emergency medicine physician records with a practice address in California. 81% 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, 96% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1999 · median 2011 among the 4,560 with a school on file
- Record last updated2026 · 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 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in San Francisco → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Stephen Anderka, MDSan Francisco, CA 941151083605455
- Steven Ansley, MDSan Francisco, CA 941151851382378
- Robert Bowyer, DOSan Francisco, CA 941151144211517
- Jennifer Brokaw, MDSan Francisco, CA 941151104817626
- Robert Colvin, MDSan Francisco, CA 941151629069158
- Mary Jane Connell, MDSan Francisco, CA 941151881685311
- Timothy Duncan, MDSan Francisco, CA 941151013908227
- Leif Eriksen, MDSan Francisco, CA 941151235120767
Common questions
What is Mary Elizabeth Johnson, MD's NPI number?
Mary Elizabeth Johnson, MD's National Provider Identifier (NPI) is 1902887227, issued on Nov 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mary Elizabeth Johnson, MD located?
The NPPES record lists a practice address at 2333 Buchanan St, San Francisco, CA, 94115. Phone: (209) 342-2300. Providers update this record themselves, so call before visiting.
How can I verify Mary Elizabeth Johnson, MD's license?
NPPES lists California license number A75167, 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 Mary Elizabeth Johnson, MD prescribe under Medicare Part D?
In 2024, Mary Elizabeth Johnson, MD had 153 Medicare Part D claims for 109 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.