Karen Patterson, MSN, RN, FNP-C
NPI 1851704977 · Nurse Practitioner · Santa Monica, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Patterson, MSN, RN, FNP-C is a Nurse Practitioner provider in Santa Monica, CA (NPI 1851704977).
Provider details
- NPI number
- 1851704977
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MSN, RN, FNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- 22912 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
12 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
547 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 196 | $69 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 140 | $104 |
| Advance Care Planning, First 30 Minutes99497 | 61 | $67 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 54 | $152 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 50 | $114 |
| Advance Care Planning, Each Additional 30 Minutes99498 | 22 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) |
|---|---|
| Methadone Hcl | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 1821 Wilshire Blvd Ste 100Santa Monica, CA 90403-5627Phone: (310) 575-3100Fax: (310) 575-3102
Registry dates
- Enumerated
- 2014-06-05
- Last updated
- 2024-02-13
- Certified
- 2024-02-13
Frequently asked questions
- What is Karen Patterson's NPI number?
- Karen Patterson's National Provider Identifier (NPI) is 1851704977, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Patterson's specialty?
- Karen Patterson is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Patterson located?
- Karen Patterson's practice location on file with NPPES is 2021 Santa Monica Blvd Ste 245e, Santa Monica, CA 90404-2132.
- What is Karen Patterson's phone number?
- The practice phone number listed in the NPPES registry for Karen Patterson is (310) 829-8975.
- Does Karen Patterson accept Medicare?
- Karen Patterson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Patterson's NPI active?
- Yes — Karen Patterson's NPI (1851704977) is active in the NPPES registry as of the last update on 2024-02-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.