Diana Emerson, N.P
Nurse Practitioner · San Mateo, CA
Diana Emerson, N.P is a nurse practitioner with a practice address in San Mateo, California, and NPI 1194836494, issued on Aug 31, 2006. Check the license (California NP5213, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Diana Emerson
- Credential
- N.P
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- NP5213 CA
Self-reported in NPPES; status is on the state search - Practice location
- 100 S San Mateo Dr, San Mateo, CA 94401
- Phone
- (650) 404-8408
- Enumerated
- Aug 31, 2006
- Record last updated
- Jun 23, 2025
- Medicare enrollment
- Enrolled (PECOS I20070719000281); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →
Also registered at 100 S San Mateo Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Frederick Adler, M.D.Family Medicine Physician1629030515
- Avanti Ambekar, M.D.Diagnostic Radiology Physician1356447627
- Mandeep Bajwa, M.D.Family Medicine Physician1891083978
- Harriet Borofsky, M.D.Diagnostic Radiology Physician1033162912
- Kelly Broderick, M.D.Diagnostic Radiology Physician1609821891
- Joey CheungRadiological Physics Physician1154256493
Verify Diana Emerson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license NP5213Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average nurse practitioner in 2024
399 Medicare Part D claims for 254 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. 27 claims were for opioids.
Most prescribed
- Azithromycin35 claims
- Cephalexin33 claims
- Albuterol Sulfate Hfa29 claims
- Ciprofloxacin Hcl21 claims
- Amoxicillin-Clavulanate Potass17 claims
- Doxycycline Hyclate16 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
- Cep America - CaliforniaSacramento, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diana Emerson among 8,223 nurse practitioner records in California
Diana Emerson, N.P is one of 8,223 nurse practitioner records with a practice address in California. 65% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 82% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated2007 · median 2017 among the 3,425 with a school on file
- Record last updated2025 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nurse Practitioner providers in California
There are 8,223 nurse practitioner records in California.
All 8,223 in California → Every provider in San Mateo → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Catrina Blake, FNPSan Mateo, CA 944011205472115
- Jill Bryon, NPSan Mateo, CA 944011851811244
- Patrick Conard, NPSan Mateo, CA 944011851138010
- Nicole Corwin, NP, RNSan Mateo, CA 944011285186163
- Elizabeth Hisashima, FNPSan Mateo, CA 944011821556762
- Michelle Lee, NPSan Mateo, CA 944011285122499
- Lauren ScottSan Mateo, CA 944011376186403
- Danielle Jackson-Tross, MSN, APRN, FNP-BCSan Mateo, CA 944021720598881
Common questions
What is Diana Emerson, N.P's NPI number?
Diana Emerson, N.P's National Provider Identifier (NPI) is 1194836494, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diana Emerson, N.P located?
The NPPES record lists a practice address at 100 S San Mateo Dr, San Mateo, CA, 94401. Phone: (650) 404-8408. Providers update this record themselves, so call before visiting.
How can I verify Diana Emerson, N.P's license?
NPPES lists California license number NP5213, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Diana Emerson, N.P prescribe under Medicare Part D?
In 2024, Diana Emerson, N.P had 399 Medicare Part D claims for 254 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.