Si an, M.D.
NPI 1609295591 · Anesthesiology Physician · Durham, NC
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Si an, M.D. is a Anesthesiology Physician provider in Durham, NC (NPI 1609295591).
Provider details
- NPI number
- 1609295591
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
118 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 96 | $190 |
| Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620 | 22 | $41 |
Typical Medicare-allowed amounts for these services range $41–$190 (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
Additional practice locations (1)
- 2301 Vanderbilt University HospitalNashville, TN 37232-7237Phone: (615) 936-1830
Registry dates
- Enumerated
- 2014-04-08
- Last updated
- 2019-08-07
Frequently asked questions
- What is Si an's NPI number?
- Si an's National Provider Identifier (NPI) is 1609295591, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Si an's specialty?
- Si an is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Si an located?
- Si an's practice location on file with NPPES is Dumc 3094, Durham, NC 27710-0001.
- What is Si an's phone number?
- The practice phone number listed in the NPPES registry for Si an is (919) 684-6633.
- Does Si an accept Medicare?
- Si an is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Si an's NPI active?
- Yes — Si an's NPI (1609295591) is active in the NPPES registry as of the last update on 2019-08-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.