Sharon Ahn, NP-C
NPI 1558019430 · Family Nurse Practitioner · El Segundo, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sharon Ahn, NP-C is a Family Nurse Practitioner provider in El Segundo, CA (NPI 1558019430).
Provider details
- NPI number
- 1558019430
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP-C
- Sex
- Female
- Sole proprietor
- No
- License
- 95016159 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
4 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
141 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 60 | $84 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 26 | $53 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 17 | $119 |
| Telephone Medical Discussion With Physician, 5-10 Minutes99441 | 13 | $53 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 13 | $18 |
| Administration of Pneumococcal VaccineG0009 | 12 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 75 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 164 | 68 |
| Rosuvastatin Calcium | 153 | 57 |
| Omeprazole | 147 | 66 |
| Lisinopril | 137 | 55 |
| Amlodipine Besylate | 132 | 51 |
| Atorvastatin Calcium | 132 | 55 |
| Levothyroxine Sodium |
Practice location
Mailing address
Additional practice locations (2)
- 2780 Skypark Dr Ste 115Torrance, CA 90505-5342Phone: (310) 530-7244
- 2200 Sepulveda BlvdTorrance, CA 90501-5301Phone: (310) 326-9167
Registry dates
- Enumerated
- 2022-03-10
- Last updated
- 2026-05-07
- Certified
- 2026-05-07
Frequently asked questions
- What is Sharon Ahn's NPI number?
- Sharon Ahn's National Provider Identifier (NPI) is 1558019430, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sharon Ahn's specialty?
- Sharon Ahn is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sharon Ahn located?
- Sharon Ahn's practice location on file with NPPES is 2175 Park Pl, El Segundo, CA 90245-4705.
- What is Sharon Ahn's phone number?
- The practice phone number listed in the NPPES registry for Sharon Ahn is (310) 354-4200.
- Does Sharon Ahn accept Medicare?
- Sharon Ahn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sharon Ahn's NPI active?
- Yes — Sharon Ahn's NPI (1558019430) is active in the NPPES registry as of the last update on 2026-05-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.