Dr. Gary F. Forrister, MD
- Medicare services, 2024
- 593
- Medicare patients, 2024
- 88
- Part D claims, 2024
- 1,538
- Industry payments
- $30
- Affiliated sites
- 1
- Practice address
- 805 W Arrow Hwy, Glendora, CA 91740
- Practice phone
- Call (774) 994-8376
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Gary Forrister M.D.
Glendora, California
Find Dr. Forrister's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Gary F. Forrister is a psychiatrist in Glendora, California
Dr. Forrister practices at Gary Forrister M.D. in Glendora, California.
Dr. Forrister's NPI, 1467402685, was assigned on May 10, 2006. Dr. Forrister graduated from Warren Alpert Medical School of Brown University in 1989. Dr. Forrister holds Massachusetts license 78006.
- NPI
- 1467402685NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8921037599
- NPI enumeration date
- May 10, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (774) 994-8376
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gary F. Forrister practices at Gary Forrister M.D. in Glendora, California
Dr. Forrister's primary practice is Gary Forrister M.D., at 805 W Arrow Hwy, Glendora, CA 91740 in Los Angeles County. The practice phone is (774) 994-8376.
- Gary Forrister M.D.805 W Arrow Hwy, Glendora, CA 91740 · Los Angeles CountyPhone(774) 994-8376
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gary F. Forrister is affiliated with 2 sites of care
Dr. Forrister's primary practice is Gary Forrister M.D. in Glendora, California. Dmand AI also links Dr. Forrister to 1 physician office, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gary F. Forrister's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Forrister practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Gary Forrister M.D. | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gary F. Forrister is one of 6,803 psychiatrists in California
Psychiatry is Dr. Forrister's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Forrister is licensed in Massachusetts.
Specialties and state licenses
- Psychiatry, MassachusettsPrimary
Psychiatrists near Dr. Forrister
Counts of psychiatrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Gary F. Forrister billed Medicare for 593 services in 2024
CMS data shows 593 Medicare services from Dr. Forrister across 4 procedure codes in 2024, for 88 Medicare patients. Medicare paid $36,334 for them. Every service was in an office.
Dr. Forrister's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4462024: 39312%
- Tests and treatments
- 2023: 1732024: 20016%
Dr. Forrister compared with the California median for psychiatrists, 2024
- Dr. Forrister
- California median
- Medicare services
- 593vs 1195.0 times
- Medicare patients
- 88vs 412.1 times
- Part D claims
- 1,428vs 1449.9 times
Medians across 6,809 psychiatrists in California with Dmand AI profiles that report each measure.
Dr. Forrister's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Forrister and other psychiatrists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gary F. Forrister treated 88 Medicare patients in 2024, average age 73
CMS counts 88 Medicare patients who saw Dr. Forrister in 2024. The largest group is 65 to 74, with 37 patients. 75% of them have high cholesterol, and 75% have mood disorders. Their average risk score is 1.11, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Forrister's median patient age at 66, with 61% women.
Dr. Forrister's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Forrister's Medicare patients by sex, 2024
- Women5461%
- Men3439%
Chronic conditions among Dr. Forrister's Medicare patients, 2024
- High cholesterol75%
- Mood disorders75%
- Depression66%
- High blood pressure60%
- Anxiety50%
- Arthritis40%
- Bipolar disorder23%
- Cancer20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Forrister's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women61%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gary F. Forrister wrote 1,538 Medicare Part D claims in 2024
In 2024, Dr. Forrister wrote 1,538 Medicare Part D claims for 118 patients. 97% of them were for generic drugs. CMS names the drug for 1,428 of them, across 29 drugs with 11 or more claims each, at $43,260 in total drug cost. In 2023, CMS named 1,345 claims across 25 drugs.
Dr. Forrister's Part D claims by kind of drug, 2024
- Generic1,486 claims97%
- Brand-name52 claims3%
Dr. Forrister's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Forrister's Part D claims, 2024
- Antipsychotics, patients 65 and over8%118 of 1,538 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,3452024: 1,4286%
Drugs named by CMS: 29 in 2024, 25 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Gary F. Forrister offers telehealth to Medicare patients
Dr. Forrister accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Forrister as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Gary F. Forrister received $30 in industry payments in 2020
CMS Open Payments shows 2 general payments to Dr. Forrister from 1 drug or device company in 2020. Food and beverage make up the largest share, 100% of the total. Lundbeck LLC paid the most, $30.
Companies that paid Dr. Forrister the most, 2020 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gary F. Forrister graduated from Warren Alpert Medical School of Brown University
Dr. Forrister graduated from Warren Alpert Medical School of Brown University in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gary F. Forrister's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Gary F. Forrister
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Gary F. Forrister's NPI number?
Dr. Gary F. Forrister's NPI number is 1467402685. It was assigned on May 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gary F. Forrister?
Dr. Gary F. Forrister is a psychiatrist in Glendora, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Gary F. Forrister practice?
Dr. Forrister practices at 805 W Arrow Hwy, Glendora, CA 91740. Dr. Forrister's primary practice is Gary Forrister M.D. in Glendora, California. Dmand AI also links Dr. Forrister to 1 physician office.
What is Dr. Gary F. Forrister's office phone number?
The practice phone on file for Dr. Forrister is (774) 994-8376.
What is Dr. Gary F. Forrister's medical license number?
Dr. Forrister holds Massachusetts license 78006.
Does Dr. Gary F. Forrister accept Medicare?
Yes. CMS data shows Dr. Forrister billed Medicare for 593 services in 2024, and Dr. Forrister accepts Medicare assignment.
Does Dr. Gary F. Forrister offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Forrister as offering telehealth services.
How many Medicare patients does Dr. Gary F. Forrister see?
CMS counts 88 Medicare patients who saw Dr. Forrister in 2024, with an average age of 73.
What services does Dr. Gary F. Forrister bill to Medicare?
In 2024, Dr. Forrister's most billed Medicare services were office visit, established patient (99213), psychiatric service (90833) and office visit, established patient (99214).
Where did Dr. Gary F. Forrister go to medical school?
Dr. Forrister graduated from Warren Alpert Medical School of Brown University in 1989.
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What drugs does Dr. Gary F. Forrister prescribe most?
In 2024 Medicare Part D data, Dr. Forrister's most prescribed drugs by claims were Lorazepam, Clonazepam and Duloxetine HCl.
Has Dr. Gary F. Forrister received payments from drug or device companies?
CMS Open Payments shows $30 in general payments to Dr. Forrister from 1 company from 2020 to 2020. The largest total came from Lundbeck LLC.
How long has Dr. Gary F. Forrister been practicing?
Dr. Forrister graduated from medical school in 1989, 37 years ago.
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