Mark Song, MD, PHD
NPI 1326068560 · Nephrology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Song, MD, PHD is a Nephrology Physician provider in Los Angeles, CA (NPI 1326068560).
Provider details
- NPI number
- 1326068560
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- A49785 (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
19 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
7,211 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 2,690 | $104 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 408 | $9 |
| Advance Care Planning, First 30 Minutes99497 | 403 | $94 |
| Complete Ultrasound Scan Behind Abdominal Cavity76770 | 393 | $130 |
| Complete Ultrasound Scan of Abdomen76700 | 384 | $140 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 383 | $23 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 269 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 3,138 | 768 |
| Amlodipine Besylate | 1,848 | 434 |
| Metformin Hcl | 1,425 | 329 |
| Icosapent Ethylbrand: Vascepa | 1,243 | 209 |
| Losartan Potassium | 1,163 | 282 |
| Celecoxib | 1,029 | 341 |
| Losartan/Hydrochlorothiazidebrand: Losartan-Hydrochlorothiazide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,963 across 136 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
- 2006-07-20
- Last updated
- 2011-12-01
Frequently asked questions
- What is Mark Song's NPI number?
- Mark Song's National Provider Identifier (NPI) is 1326068560, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Song's specialty?
- Mark Song is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Song located?
- Mark Song's practice location on file with NPPES is 3663 W 6th St Ste 307, Los Angeles, CA 90020-3050.
- What is Mark Song's phone number?
- The practice phone number listed in the NPPES registry for Mark Song is (213) 736-1884.
- Does Mark Song accept Medicare?
- Mark Song is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Song's NPI active?
- Yes — Mark Song's NPI (1326068560) is active in the NPPES registry as of the last update on 2011-12-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.