Katherine Oakley, M.D.
NPI 1083064935 · General Practice Physician · Claremont, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Oakley, M.D. is a General Practice Physician provider in Claremont, CA (NPI 1083064935).
Provider details
- NPI number
- 1083064935
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
14 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 | 14 | $98 |
Typical Medicare-allowed amounts for these services range $98–$98 (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 · 42 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 103 | 42 |
| Atorvastatin Calcium | 89 | 38 |
| Losartan Potassium | 75 | 32 |
| Lisinopril | 68 | 28 |
| Levothyroxine Sodium | 67 | 34 |
| Rosuvastatin Calcium | 44 | 19 |
| Metoprolol Succinate |
Practice location
Mailing address
Additional practice locations (1)
- 400 N Pepper AveColton, CA 92324-1801Phone: (855) 422-8029
Registry dates
- Enumerated
- 2016-06-21
- Last updated
- 2021-12-06
Frequently asked questions
- What is Katherine Oakley's NPI number?
- Katherine Oakley's National Provider Identifier (NPI) is 1083064935, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Oakley's specialty?
- Katherine Oakley is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Oakley located?
- Katherine Oakley's practice location on file with NPPES is 1601 Monte Vista Ave Ste 190, Claremont, CA 91711-6600.
- What is Katherine Oakley's phone number?
- The practice phone number listed in the NPPES registry for Katherine Oakley is (909) 865-9977.
- Does Katherine Oakley accept Medicare?
- Katherine Oakley is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Oakley's NPI active?
- Yes — Katherine Oakley's NPI (1083064935) is active in the NPPES registry as of the last update on 2021-12-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.