Jaesoo Pak, MD
NPI 1366633257 · Endoscopy Clinic/Center · Cerritos, CA
Enrolled with Medicare as Part B Supplier - Ambulatory Surgical Center · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jaesoo Pak, MD is a Endoscopy Clinic/Center organization in Cerritos, CA (NPI 1366633257).
Provider details
- NPI number
- 1366633257
- Entity type
- Organization
- Primary specialty
- Endoscopy Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Jaesoo Pak, Medical Director(562) 809-2103
Specialties & taxonomies
Ambulatory Health Care Facilities
- Ambulatory Surgical Clinic/Center261QA1903X
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 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
716 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) |
|---|---|---|
| Microscopic Exam of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43252 | 336 | $955 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 331 | $271 |
| Removal of Polyps Or Growths of Large Bowel Using a Flexible Endoscope With Electrical Cautery45384 | 27 | $703 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 22 | $703 |
Typical Medicare-allowed amounts for these services range $271–$955 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Cerritos Endoscopic Medical Center
Registry dates
- Enumerated
- 2007-08-06
- Last updated
- 2008-06-19
Frequently asked questions
- What is Jaesoo Pak, MD's NPI number?
- Jaesoo Pak, MD's National Provider Identifier (NPI) is 1366633257, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Jaesoo Pak, MD?
- Jaesoo Pak, MD is classified in the NPPES registry as Endoscopy Clinic/Center (Ambulatory Health Care Facilities).
- Where is Jaesoo Pak, MD located?
- Jaesoo Pak, MD's practice location on file with NPPES is 11845 South St, Cerritos, CA 90703-6825.
- What is Jaesoo Pak, MD's phone number?
- The practice phone number listed in the NPPES registry for Jaesoo Pak, MD is (562) 809-2103.
- Does Jaesoo Pak, MD accept Medicare?
- Jaesoo Pak, MD is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Jaesoo Pak, MD?
- The authorized official listed on Jaesoo Pak, MD's NPPES record is Jaesoo Pak, Medical Director. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Jaesoo Pak, MD's NPI active?
- Yes — Jaesoo Pak, MD's NPI (1366633257) is active in the NPPES registry as of the last update on 2008-06-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.