Jennifer Chaffin, M.D.
NPI 1639370018 · Psychiatry Physician · Gilbert, AZ
Enrolled with Medicare as Order and Referring Only - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jennifer Chaffin, M.D. is a Psychiatry Physician provider in Gilbert, AZ (NPI 1639370018).
Provider details
- NPI number
- 1639370018
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 2004016368 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clozapine | 84 | — |
| Sertraline Hcl | 70 | — |
| Quetiapine Fumarate | 65 | — |
| Trazodone Hcl | 61 | 13 |
| Olanzapine | 49 | — |
| Escitalopram Oxalate | 42 | 11 |
| Duloxetine Hcl | 30 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-31
- Last updated
- 2022-11-30
- Certified
- 2022-11-30
Frequently asked questions
- What is Jennifer Chaffin's NPI number?
- Jennifer Chaffin's National Provider Identifier (NPI) is 1639370018, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jennifer Chaffin's specialty?
- Jennifer Chaffin is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Jennifer Chaffin located?
- Jennifer Chaffin's practice location on file with NPPES is 1525 S Higley Rd # 104-161, Gilbert, AZ 85296-4795.
- What is Jennifer Chaffin's phone number?
- The practice phone number listed in the NPPES registry for Jennifer Chaffin is (314) 882-8123.
- Does Jennifer Chaffin accept Medicare?
- Jennifer Chaffin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jennifer Chaffin's NPI active?
- Yes — Jennifer Chaffin's NPI (1639370018) is active in the NPPES registry as of the last update on 2022-11-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.