DR. BARBARA ANDREA DIAZ HERNANDEZ MD
NPI 1366486961
Psychiatry & Neurology - Psychiatry in Hastings, MI
About Dr. Barbara Andrea Diaz Hernandez Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BARBARA ANDREA DIAZ HERNANDEZ MD (NPI 1366486961) is an individual psychiatry provider in Hastings, Michigan, licensed in Michigan (4301064824) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS, is affiliated with Corewell Health Pennock Hospital, and is a graduate of Other (1978).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Barbara Andrea Diaz Hernandez Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Barbara Diaz Hernandez reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Hastings, MI 49058
- Reassigned Medicare billing, Michigan enrollment
- 26 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Corewell Health Pennock Hospital
Critical Access Hospitals · Hastings, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 49058 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Barbara Diaz Hernandez's NPI number?
The NPI number for Barbara Diaz Hernandez is 1366486961. It was assigned to this individual provider in the NPPES registry on June 15, 2006.
Where is Barbara Diaz Hernandez located?
Barbara Diaz Hernandez practices at 500 Barfield Dr, Hastings, MI 49058. The listed phone number is (269) 948-8041.
What is Barbara Diaz Hernandez's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Barbara Diaz Hernandez enrolled in Medicare?
Yes. Barbara Diaz Hernandez is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Barbara Diaz Hernandez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Barbara Diaz Hernandez reassigns Medicare benefits to Barry County Community Mental Health Authority (Hastings, MI). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Barbara Diaz Hernandez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Barbara Diaz Hernandez accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Oscar Insurance Company and Priority Health list Barbara Diaz Hernandez as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Barbara Diaz Hernandez affiliated with any hospitals?
According to CMS data, Barbara Diaz Hernandez is affiliated with Corewell Health Pennock Hospital.
When was this NPI record last updated?
The NPPES record for Barbara Diaz Hernandez was last updated on May 24, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Barbara Andrea Diaz Hernandez, MD · NPI 1366486961
Psychiatry physician in Hastings, Michigan. Individual provider, active in the CMS NPPES registry since June 15, 2006.
## Identity
- **NPI:** 1366486961 (Entity type: Individual)
- **Enumerated:** June 15, 2006
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** 4301064824 (Michigan)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 500 BARFIELD DR, Hastings, MI 49058-9018
- **Phone:** (269) 948-8041
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Barry County Community Mental Health Authority (NPI 1952357410, Hastings, MI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1978
## Record status
- **NPPES last updated:** May 24, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1366486961) · Data from the CMS NPPES public registry.