Gahae Yun
NPI 1356866644 · Certified Registered Nurse Anesthetist · Boston, MA
Enrolled with Medicare as Practitioner - Certified Registered Nurse Anesthetist (crna) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gahae Yun is a Certified Registered Nurse Anesthetist provider in Boston, MA (NPI 1356866644).
Provider details
- NPI number
- 1356866644
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
40 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) |
|---|---|---|
| Anesthesia for Procedure for Total Knee Joint Replacement01402 | 15 | $202 |
| Anesthesia for Total Hip Replacement01214 | 14 | $203 |
| Anesthesia for Retinal Surgery00145 | 11 | $155 |
Typical Medicare-allowed amounts for these services range $155–$203 (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
Registry dates
- Enumerated
- 2017-08-08
- Last updated
- 2022-07-21
- Certified
- 2022-07-21
Frequently asked questions
- What is Gahae Yun's NPI number?
- Gahae Yun's National Provider Identifier (NPI) is 1356866644, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gahae Yun's specialty?
- Gahae Yun is listed in the NPPES registry with a primary specialty of Certified Registered Nurse Anesthetist (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Gahae Yun located?
- Gahae Yun's practice location on file with NPPES is 800 Washington St, Boston, MA 02111-1552.
- What is Gahae Yun's phone number?
- The practice phone number listed in the NPPES registry for Gahae Yun is (516) 521-0002.
- Does Gahae Yun accept Medicare?
- Gahae Yun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gahae Yun's NPI active?
- Yes — Gahae Yun's NPI (1356866644) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.