Janine Chamberlin, M.D.
NPI 1225210016 · Family Medicine Physician · Brea, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Janine Chamberlin, M.D. is a Family Medicine Physician provider in Brea, CA (NPI 1225210016).
Provider details
- NPI number
- 1225210016
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A104263 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
450 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 213 | $98 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 101 | $136 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 51 | $140 |
| Administration of Influenza Virus VaccineG0008 | 33 | $35 |
| Urinalysis, Manual Test81002 | 16 | $3 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 134 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 367 | 110 |
| Levothyroxine Sodium | 327 | 89 |
| Rosuvastatin Calcium | 326 | 109 |
| Amlodipine Besylate | 185 | 62 |
| Losartan Potassium | 183 | 52 |
| Lisinopril | 149 | 48 |
| Omeprazole |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$131 across 5 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 (2)
- 1325 N Rose DrSte 100Placentia, CA 92870-3840Phone: (714) 729-0103Fax: (714) 729-0173
- 1325 N Rose DrSte 100Placentia, CA 92870-3840Phone: (714) 729-0103Fax: (714) 729-0173
Registry dates
- Enumerated
- 2007-12-03
- Last updated
- 2019-10-08
Frequently asked questions
- What is Janine Chamberlin's NPI number?
- Janine Chamberlin's National Provider Identifier (NPI) is 1225210016, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Janine Chamberlin's specialty?
- Janine Chamberlin is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Janine Chamberlin located?
- Janine Chamberlin's practice location on file with NPPES is 380 W Central Ave Ste 400, Brea, CA 92821.
- What is Janine Chamberlin's phone number?
- The practice phone number listed in the NPPES registry for Janine Chamberlin is (714) 203-1799.
- Does Janine Chamberlin accept Medicare?
- Janine Chamberlin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Janine Chamberlin's NPI active?
- Yes — Janine Chamberlin's NPI (1225210016) is active in the NPPES registry as of the last update on 2019-10-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.