Provider Profile
Diana Emerson, N.P
Unclaimed ProfileAbout Diana Emerson
Listed in the NPI registry as a nurse practitioner, Diana Emerson, N.P practices in San Mateo, CA. According to Medicare claims data, Diana cared for 211 Medicare patients across 220 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and automated urinalysis test.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (650) 404-8408
- Email not available
Practice Locations
100 S SAN MATEO DR
San Mateo, CA 94401
1625 Stockton Blvd
Sacramento, CA 95816
Procedures Most Often Billed to Medicare
220 services · 211 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
89 | More often than most peers in Nurse Practitioner |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
61 | As often as other peers in Nurse Practitioner |
| Automated urinalysis test | Lab test | 81003 |
37 | More often than most peers in Nurse Practitioner |
| Detection test by multiplex amplified probe technique for severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (covid-19), influenza virus types a and b, and respiratory syncytial virus | Lab test | 87637 |
17 | Less often than most peers in Nurse Practitioner |
| Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) | Lab test | 87880 |
16 | As often as other peers in Nurse Practitioner |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other nurse practitioners in San Mateo 8
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2007 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Diana Emerson specialize in?
Diana Emerson is a nurse practitioner in San Mateo, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Diana Emerson located?
Diana Emerson is listed at 100 S San Mateo Dr, San Mateo, CA 94401. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Diana Emerson's phone number?
The number on file is (650) 404-8408. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Diana Emerson's NPI number?
Diana Emerson's National Provider Identifier is 1194836494. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Diana Emerson train?
Diana Emerson attended Other, graduating in 2007. This comes from the CMS National Downloadable File.
CMS public data
How long has Diana Emerson been practicing?
Diana Emerson has 19 years experience. Calculated from a graduation year of 2007, reported in the CMS National Downloadable File.
CMS public data
What does Diana Emerson do most often?
According to Medicare billing data, Diana Emerson the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Diana Emerson confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Diana Emerson. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.