Mark Asef, M.D.
NPI 1225561673 · Nephrology Physician · Highland, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Asef, M.D. is a Nephrology Physician provider in Highland, CA (NPI 1225561673).
Provider details
- NPI number
- 1225561673
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- 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 tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
5 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,538 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 642 | $78 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 274 | $117 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 153 | $172 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 149 | $353 |
| Hemodialysis Procedure With Physician Evaluation90935 | 110 | $70 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sodium Zirconium Cyclosilicatebrand: Lokelma | 105 | 23 |
| Furosemide | 81 | 25 |
| Losartan Potassium | 65 | 33 |
| Carvedilol | 59 | 14 |
| Nifedipinebrand: Nifedipine Er | 55 | 21 |
| Lisinopril | 46 | 14 |
| Calcitriol | 45 | 18 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$712 across 31 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
Additional practice locations (4)
- 264 N Highland Springs Ave Ste 3bBanning, CA 92220-3085Phone: (951) 769-9776Fax: (951) 769-9026
- 17234 Valley BlvdFontana, CA 92335Phone: (909) 427-5000
- 22555 Alessandro Blvd Ste BMoreno Valley, CA 92553-8533Phone: (951) 656-7081Fax: (951) 656-1710
- 401 E Highland Ave Ste 551San Bernardino, CA 92404-3840Phone: (909) 882-9150Fax: (909) 883-8972
Registry dates
- Enumerated
- 2017-04-04
- Last updated
- 2022-08-09
- Certified
- 2022-08-09
Frequently asked questions
- What is Mark Asef's NPI number?
- Mark Asef's National Provider Identifier (NPI) is 1225561673, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Asef's specialty?
- Mark Asef is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Asef located?
- Mark Asef's practice location on file with NPPES is 7223 Church St Ste A20, Highland, CA 92346-5812.
- What is Mark Asef's phone number?
- The practice phone number listed in the NPPES registry for Mark Asef is (909) 882-0702.
- Does Mark Asef accept Medicare?
- Mark Asef is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Asef's NPI active?
- Yes — Mark Asef's NPI (1225561673) is active in the NPPES registry as of the last update on 2022-08-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.