Carolyn Dreyer, FNP
NPI 1386213734 · Family Nurse Practitioner · Fullerton, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carolyn Dreyer, FNP is a Family Nurse Practitioner provider in Fullerton, CA (NPI 1386213734).
Provider details
- NPI number
- 1386213734
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 95013306 (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 tenure25% of score
4 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
77 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 30 | $118 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 29 | $81 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 18 | $13 |
Typical Medicare-allowed amounts for these services range $13–$118 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 107 | 57 |
| Losartan Potassium | 105 | 48 |
| Levothyroxine Sodium | 82 | 46 |
| Amlodipine Besylate | 79 | 40 |
| Lisinopril | 47 | 20 |
| Trazodone Hcl | 47 | 25 |
| Fluticasone Propionate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$651 across 28 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 21750 Ctr Ct Dr SouthSuite 650Cerritos, CA 90703Phone: (323) 628-8671
Registry dates
- Enumerated
- 2021-06-21
- Last updated
- 2021-09-30
- Certified
- 2021-09-15
Frequently asked questions
- What is Carolyn Dreyer's NPI number?
- Carolyn Dreyer's National Provider Identifier (NPI) is 1386213734, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carolyn Dreyer's specialty?
- Carolyn Dreyer is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Carolyn Dreyer located?
- Carolyn Dreyer's practice location on file with NPPES is 3320 Topaz Ln Apt B21, Fullerton, CA 92831-2600.
- What is Carolyn Dreyer's phone number?
- The practice phone number listed in the NPPES registry for Carolyn Dreyer is (949) 291-2448.
- Does Carolyn Dreyer accept Medicare?
- Carolyn Dreyer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carolyn Dreyer's NPI active?
- Yes — Carolyn Dreyer's NPI (1386213734) is active in the NPPES registry as of the last update on 2021-09-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.