Kaitlyn Sun, DO
NPI 1649856097 · Hospitalist Physician · Concord, CA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kaitlyn Sun, DO is a Hospitalist Physician provider in Concord, CA (NPI 1649856097).
Provider details
- NPI number
- 1649856097
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 20A22294 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
203 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 160 | $88 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 24 | $130 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 19 | $145 |
Typical Medicare-allowed amounts for these services range $88–$145 (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)
- 155 N Fresno StFresno, CA 93701-2302Phone: (559) 499-6500
Registry dates
- Enumerated
- 2021-03-23
- Last updated
- 2024-10-01
- Certified
- 2024-10-01
Frequently asked questions
- What is Kaitlyn Sun's NPI number?
- Kaitlyn Sun's National Provider Identifier (NPI) is 1649856097, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kaitlyn Sun's specialty?
- Kaitlyn Sun is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Kaitlyn Sun located?
- Kaitlyn Sun's practice location on file with NPPES is 2700 Grant St Ste 200, Concord, CA 94520-2270.
- What is Kaitlyn Sun's phone number?
- The practice phone number listed in the NPPES registry for Kaitlyn Sun is (925) 939-3000.
- Does Kaitlyn Sun accept Medicare?
- Kaitlyn Sun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kaitlyn Sun's NPI active?
- Yes — Kaitlyn Sun's NPI (1649856097) is active in the NPPES registry as of the last update on 2024-10-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.