Karen Littmann-Davis, P.A.C.
NPI 1609898998 · Medical Physician Assistant · Valencia, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Littmann-Davis, P.A.C. is a Medical Physician Assistant provider in Valencia, CA (NPI 1609898998).
Provider details
- NPI number
- 1609898998
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.C.
- Sex
- Female
- Sole proprietor
- No
- License
- PA12439 (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
19 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
12 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 | 12 | $76 |
Typical Medicare-allowed amounts for these services range $76–$76 (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 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 65 | 54 |
| Levothyroxine Sodium | 50 | 33 |
| Rosuvastatin Calcium | 41 | 37 |
| Losartan Potassium | 29 | 22 |
| Amlodipine Besylate | 28 | 24 |
| Metformin Hcl | 28 | 21 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-24
- Last updated
- 2015-09-10
Frequently asked questions
- What is Karen Littmann-Davis's NPI number?
- Karen Littmann-Davis's National Provider Identifier (NPI) is 1609898998, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Littmann-Davis's specialty?
- Karen Littmann-Davis is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Littmann-Davis located?
- Karen Littmann-Davis's practice location on file with NPPES is 25775 Mcbean Pkwy, Valencia, CA 91355-3708.
- What is Karen Littmann-Davis's phone number?
- The practice phone number listed in the NPPES registry for Karen Littmann-Davis is (661) 753-5464.
- Does Karen Littmann-Davis accept Medicare?
- Karen Littmann-Davis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Littmann-Davis's NPI active?
- Yes — Karen Littmann-Davis's NPI (1609898998) is active in the NPPES registry as of the last update on 2015-09-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.