Kirsten Flagg
NPI 1134537244 · Family Nurse Practitioner · Oakland, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kirsten Flagg is a Family Nurse Practitioner provider in Oakland, CA (NPI 1134537244).
Provider details
- NPI number
- 1134537244
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 95000967 (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
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
84 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 55 | $63 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 15 | $34 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 14 | $94 |
Typical Medicare-allowed amounts for these services range $34–$94 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 38 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 53 | 13 |
| Amlodipine Besylate | 47 | 17 |
| Gabapentin | 46 | 20 |
| Atorvastatin Calcium | 41 | 15 |
| Levetiracetam | 31 | — |
| Buprenorphine Hcl/Naloxone Hclbrand: Buprenorphine-Naloxone | 29 | 17 |
| Bupropion Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-08-01
- Last updated
- 2014-08-01
Frequently asked questions
- What is Kirsten Flagg's NPI number?
- Kirsten Flagg's National Provider Identifier (NPI) is 1134537244, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kirsten Flagg's specialty?
- Kirsten Flagg is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Kirsten Flagg located?
- Kirsten Flagg's practice location on file with NPPES is 616 16th St, Oakland, CA 94612-1205.
- What is Kirsten Flagg's phone number?
- The practice phone number listed in the NPPES registry for Kirsten Flagg is (510) 451-1273.
- Does Kirsten Flagg accept Medicare?
- Kirsten Flagg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kirsten Flagg's NPI active?
- Yes — Kirsten Flagg's NPI (1134537244) is active in the NPPES registry as of the last update on 2014-08-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.