Won Seok Cha
NPI 1174903140 · Family Medicine Physician · Citrus Heights, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Won Seok Cha is a Family Medicine Physician provider in Citrus Heights, CA (NPI 1174903140).
Provider details
- NPI number
- 1174903140
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- Yes
- License
- C186753 (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
11 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
425 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 156 | $111 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 140 | $83 |
| Automated Urinalysis Test81003 | 32 | $2 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 27 | $111 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 25 | $152 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 56 | 31 |
| Atorvastatin Calcium | 36 | 25 |
| Amlodipine Besylate | 36 | 21 |
| Gabapentin | 33 | — |
| Levothyroxine Sodium | 33 | 16 |
| Omeprazole | 32 | 28 |
| Hydrochlorothiazide | 32 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-06-04
- Last updated
- 2024-10-15
- Certified
- 2023-08-16
Frequently asked questions
- What is Won Seok Cha's NPI number?
- Won Seok Cha's National Provider Identifier (NPI) is 1174903140, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Won Seok Cha's specialty?
- Won Seok Cha is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Won Seok Cha located?
- Won Seok Cha's practice location on file with NPPES is 7551 Madison Ave, Citrus Heights, CA 95610-7449.
- What is Won Seok Cha's phone number?
- The practice phone number listed in the NPPES registry for Won Seok Cha is (916) 904-3000.
- Does Won Seok Cha accept Medicare?
- Won Seok Cha is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Won Seok Cha's NPI active?
- Yes — Won Seok Cha's NPI (1174903140) is active in the NPPES registry as of the last update on 2024-10-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.