Provider Profile
Catherine D. Tambunan, NP
Unclaimed ProfileAbout Catherine Tambunan
Listed in the NPI registry as a nurse practitioner, Catherine D. Tambunan, NP practices in Stanford, CA. Medicare claims data shows Catherine provided 234 services to 167 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more and established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more. NPI 1831841253 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
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) 723-4000
- Email not available
Practice Locations
300 PASTEUR DR
Stanford, CA 94305
Procedures Most Often Billed to Medicare
234 services · 167 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
147 | More often than most peers in Nurse Practitioner |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
87 | More often than most 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.
Other nurse practitioners at this location 7
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 6
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.
More connections — 17 related providers in 3 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2021 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What is Catherine D. Tambunan's specialty?
Catherine D. Tambunan is a nurse practitioner in Stanford, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Catherine D. Tambunan?
Catherine D. Tambunan is listed at 300 Pasteur Dr, Stanford, CA 94305. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Catherine D. Tambunan?
The number on file is (650) 723-4000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Catherine D. Tambunan?
Catherine D. Tambunan's National Provider Identifier is 1831841253. 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
What is Catherine D. Tambunan's education?
Catherine D. Tambunan attended Other, graduating in 2021. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Catherine D. Tambunan have?
Catherine D. Tambunan has 5 years experience. Calculated from a graduation year of 2021, reported in the CMS National Downloadable File.
CMS public data
What is Catherine D. Tambunan known for?
According to Medicare billing data, Catherine D. Tambunan 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
Is Catherine D. Tambunan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Catherine D. Tambunan. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.