Matthew Kaw, M.D.
NPI 1821044819 · Internal Medicine Physician · El Monte, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Kaw, M.D. is a Internal Medicine Physician provider in El Monte, CA (NPI 1821044819).
Provider details
- NPI number
- 1821044819
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A88602 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,118 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 890 | $109 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 408 | $89 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 369 | $9 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 141 | $62 |
| Urinalysis, Manual Test81002 | 107 | $3 |
| Administration of Influenza Virus VaccineG0008 | 90 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 192 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 809 | 208 |
| Gabapentin | 654 | 187 |
| Losartan Potassium | 520 | 123 |
| Metformin Hcl | 501 | 130 |
| Levothyroxine Sodium | 398 | 84 |
| Montelukast Sodium | 394 | 106 |
| Amlodipine Besylate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$180 across 9 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-25
- Last updated
- 2011-11-08
Frequently asked questions
- What is Matthew Kaw's NPI number?
- Matthew Kaw's National Provider Identifier (NPI) is 1821044819, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Kaw's specialty?
- Matthew Kaw is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Kaw located?
- Matthew Kaw's practice location on file with NPPES is 4355 Peck Rd, El Monte, CA 91732-1905.
- What is Matthew Kaw's phone number?
- The practice phone number listed in the NPPES registry for Matthew Kaw is (626) 575-4511.
- Does Matthew Kaw accept Medicare?
- Matthew Kaw is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Kaw's NPI active?
- Yes — Matthew Kaw's NPI (1821044819) is active in the NPPES registry as of the last update on 2011-11-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.