Mark Song, M.D.
NPI 1629231378 · Family Medicine Physician · Gardena, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Song, M.D. is a Family Medicine Physician provider in Gardena, CA (NPI 1629231378).
Provider details
- NPI number
- 1629231378
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A110606 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
17 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 50 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 319 | 118 |
| Amlodipine Besylate | 234 | 87 |
| Lisinopril | 166 | 58 |
| Losartan Potassium | 136 | 51 |
| Rosuvastatin Calcium | 124 | 50 |
| Metformin Hcl | 118 | 42 |
| Hydrochlorothiazide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$126 across 7 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
- 2008-07-02
- Last updated
- 2021-12-06
Frequently asked questions
- What is Mark Song's NPI number?
- Mark Song's National Provider Identifier (NPI) is 1629231378, 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 Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Song located?
- Mark Song's practice location on file with NPPES is 15446 S Western Ave, Gardena, CA 90249-4319.
- What is Mark Song's phone number?
- The practice phone number listed in the NPPES registry for Mark Song is (800) 780-1230.
- 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 (1629231378) is active in the NPPES registry as of the last update on 2021-12-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.