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FORREST ROBERT HAMLIN SR. DO
NPI 1225558349
General Practice in San Jose, CA

Active since June 20, 2017PECOS EnrolledAccepts Medicare Assignment
415 E TAYLOR ST, SAN JOSE, CA 95112(530) 224-9144 Get Directions Write a Review

NPPES record last updated: May 20, 2019. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 30, 2023, May 20, 2019, Jun 20, 2017 (3 updates tracked since 2017).

About Forrest Robert Hamlin Sr. Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

FORREST ROBERT HAMLIN SR. DO (NPI 1225558349) is an individual general practice provider in San Jose, California, licensed in California (17023) and active in the NPI registry since June 2017. He is enrolled in Medicare PECOS, is affiliated with Billings Clinic, and is a graduate of Michigan State University College Of Osteopathic Medicine (2017).

NPPES Registry Identity

NPI1225558349
Entity TypeIndividualMale
Primary Taxonomy208D00000X
Provider Legal NameFORREST ROBERT HAMLIN SR.Credential: DO
Location Address415 E TAYLOR STSan Jose, CA 95112
Mailing Address415 E Taylor StSan Jose, CA 95112 · (530) 224-9144
Phone(530) 224-9144
Sole ProprietorYes
Medical School CMSMichigan State University College Of Osteopathic MedicineGraduated 2017
Enumeration DateJune 20, 2017
Last NPPES UpdateMay 20, 20193 updates tracked since enumeration
✔ NPI 1225558349 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyGeneral PracticeAllopathic & Osteopathic Physicians
Taxonomy Code208D00000X
License✔ Licensed in CA · 17023
Definition
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
415 E TAYLOR ST, San Jose, CA 95112
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana.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

Forrest Robert Hamlin Sr. Do 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.

PECOS PAC ID6608251525
PECOS Enrollment IDI20230914000632, I20250930001831
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Forrest Hamlin reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Utah Regional Hospitalists LLC
671 mi
Hospitalist
3100 CHANNING WAY
Idaho Falls, ID 83404
  • Reassigned Medicare billing, Idaho enrollment
  • 56 clinicians in this Medicare group
NPI 1740715507 (208) 227-2575
Billings Cinic
755 mi
Family Medicine
236 YELLOWSTONE AVE
West Yellowstone, MT 59758
  • Reassigned Medicare billing, Montana enrollment
  • Medicare enrollment name: Billings Clinic
  • 1,264 clinicians in this Medicare group
NPI 1710600119 (406) 238-2500

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 5

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
324 services140 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
187 services93 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
95 services94 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
79 services79 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
19 services19 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Billings Clinic

Acute Care Hospitals · Billings, MT
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number270004
Location2800 10th Ave NBillings, MT 59101 · Yellowstone County
Emergency services Birthing friendly

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 Forrest Hamlin's NPI number?

The NPI number for Forrest Hamlin is 1225558349. It was assigned to this individual provider in the NPPES registry on June 20, 2017.

Where is Forrest Hamlin located?

Forrest Hamlin practices at 415 E Taylor St, San Jose, CA 95112. The listed phone number is (530) 224-9144.

What is Forrest Hamlin's specialty?

The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.

Is Forrest Hamlin enrolled in Medicare?

Yes. Forrest Hamlin 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 organizations bill Medicare for Forrest Hamlin's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Forrest Hamlin reassigns Medicare benefits to 2 organizations: Utah Regional Hospitalists LLC (Idaho Falls, ID) and Billings Cinic (West Yellowstone, MT). Each 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 Forrest Hamlin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Forrest Hamlin accept?

Health plans from Blue Cross and Blue Shield of Montana list Forrest Hamlin 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 Forrest Hamlin affiliated with any hospitals?

According to CMS data, Forrest Hamlin is affiliated with Billings Clinic.

When was this NPI record last updated?

The NPPES record for Forrest Hamlin was last updated on May 20, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.