Jason Paek, M.D.
NPI 1770679631 · Internal Medicine Physician · Rowland Heights, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jason Paek, M.D. is a Internal Medicine Physician provider in Rowland Heights, CA (NPI 1770679631).
Provider details
- NPI number
- 1770679631
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G58208 (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
2,140 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 | 684 | $98 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 430 | $98 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 423 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 207 | $141 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 184 | $139 |
| Administration of Influenza Virus VaccineG0008 | 44 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 240 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 2,763 | 695 |
| Amlodipine Besylate | 2,231 | 554 |
| Losartan Potassium | 1,632 | 407 |
| Metformin Hcl | 1,425 | 374 |
| Omeprazole | 1,364 | 498 |
| Celecoxib | 964 | 388 |
| Tamsulosin Hcl | 718 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,630 across 79 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
- 2006-10-05
- Last updated
- 2019-01-09
Frequently asked questions
- What is Jason Paek's NPI number?
- Jason Paek's National Provider Identifier (NPI) is 1770679631, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Paek's specialty?
- Jason Paek is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jason Paek located?
- Jason Paek's practice location on file with NPPES is 18773 Colima Rd, Rowland Heights, CA 91748-2949.
- What is Jason Paek's phone number?
- The practice phone number listed in the NPPES registry for Jason Paek is (626) 986-4899.
- Does Jason Paek accept Medicare?
- Jason Paek is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jason Paek's NPI active?
- Yes — Jason Paek's NPI (1770679631) is active in the NPPES registry as of the last update on 2019-01-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.