Matthew Karp, MD
NPI 1417282823 · Emergency Medicine Physician · Lakeport, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Karp, MD is a Emergency Medicine Physician provider in Lakeport, CA (NPI 1417282823).
Provider details
- NPI number
- 1417282823
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- 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
16 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
802 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 363 | $179 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 281 | $9 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 97 | $123 |
| Critical Care, First 30-74 Minutes99291 | 61 | $221 |
Typical Medicare-allowed amounts for these services range $9–$221 (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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 34 | 33 |
| Doxycycline Hyclate | 25 | 25 |
| Cephalexin | 24 | 24 |
| Ondansetronbrand: Ondansetron Odt | 19 | 18 |
| Ibuprofen | 17 | 17 |
| Naproxen | 17 | 17 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 15 | 15 |
Practice location
Mailing address
Additional practice locations (1)
- 30 Mark West Springs RdSanta Rosa, CA 95403-1436Phone: (707) 576-4040
Registry dates
- Enumerated
- 2009-10-03
- Last updated
- 2022-02-04
- Certified
- 2022-02-04
Frequently asked questions
- What is Matthew Karp's NPI number?
- Matthew Karp's National Provider Identifier (NPI) is 1417282823, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Karp's specialty?
- Matthew Karp is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Karp located?
- Matthew Karp's practice location on file with NPPES is 5176 Hill Rd E, Lakeport, CA 95453-6300.
- What is Matthew Karp's phone number?
- The practice phone number listed in the NPPES registry for Matthew Karp is (707) 262-5050.
- Does Matthew Karp accept Medicare?
- Matthew Karp is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Karp's NPI active?
- Yes — Matthew Karp's NPI (1417282823) is active in the NPPES registry as of the last update on 2022-02-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.