Matthew Kaptein, M.D.
NPI 1184995094 · Nephrology Physician · Loma Linda, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Kaptein, M.D. is a Nephrology Physician provider in Loma Linda, CA (NPI 1184995094).
Provider details
- NPI number
- 1184995094
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A125084 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
14 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
1,011 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 | 258 | $78 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 164 | $131 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 143 | $17 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 106 | $354 |
| Hemodialysis Procedure With Physician Evaluation90935 | 83 | $70 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 118 | 40 |
| Amlodipine Besylate | 79 | 22 |
| Calcitriol | 79 | 22 |
| Dapagliflozin Propanediolbrand: Farxiga | 67 | 18 |
| Carvedilol | 61 | 23 |
| Nifedipinebrand: Nifedipine Er | 45 | 15 |
| Lisinopril | 40 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-01-24
- Last updated
- 2023-12-20
- Certified
- 2023-12-20
Frequently asked questions
- What is Matthew Kaptein's NPI number?
- Matthew Kaptein's National Provider Identifier (NPI) is 1184995094, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Kaptein's specialty?
- Matthew Kaptein is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Kaptein located?
- Matthew Kaptein's practice location on file with NPPES is 11234 Anderson St, Loma Linda, CA 92354-2804.
- What is Matthew Kaptein's phone number?
- The practice phone number listed in the NPPES registry for Matthew Kaptein is (909) 558-4906.
- Does Matthew Kaptein accept Medicare?
- Matthew Kaptein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Kaptein's NPI active?
- Yes — Matthew Kaptein's NPI (1184995094) is active in the NPPES registry as of the last update on 2023-12-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.