Karsten Michello Garduce, FNP
NPI 1437775418 · Family Nurse Practitioner · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karsten Michello Garduce, FNP is a Family Nurse Practitioner provider in Walnut Creek, CA (NPI 1437775418).
Provider details
- NPI number
- 1437775418
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Male
- Sole proprietor
- No
- License
- 95010860 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
95 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 80 | $126 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 15 | $162 |
Typical Medicare-allowed amounts for these services range $126–$162 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 120 W American Canyon Rd Ste M10American Canyon, CA 94503-1181Phone: (707) 551-0960Fax: (707) 551-0970
Registry dates
- Enumerated
- 2020-06-25
- Last updated
- 2023-03-14
- Certified
- 2023-03-14
Frequently asked questions
- What is Karsten Michello Garduce's NPI number?
- Karsten Michello Garduce's National Provider Identifier (NPI) is 1437775418, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karsten Michello Garduce's specialty?
- Karsten Michello Garduce is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karsten Michello Garduce located?
- Karsten Michello Garduce's practice location on file with NPPES is 738 Bancroft Rd, Walnut Creek, CA 94598-1593.
- What is Karsten Michello Garduce's phone number?
- The practice phone number listed in the NPPES registry for Karsten Michello Garduce is (925) 932-0321.
- Does Karsten Michello Garduce accept Medicare?
- Karsten Michello Garduce is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karsten Michello Garduce's NPI active?
- Yes — Karsten Michello Garduce's NPI (1437775418) is active in the NPPES registry as of the last update on 2023-03-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.