Acta Neuropathol
Amino Acid SequenceBrainDeer
Dr. Don C. Guiroy, MD
NPI1629263512
- Medicare services, 2023
- 65
- Part D claims, 2024
- 291
- Publications
- 5
- Hospital affiliations
- 1
- Industry payments
- $596
- Practice address
- 1441 Constitution Boulevard, Salinas, CA 93906
- Practice phone
- Call (831) 755-4111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Guiroy'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. Don C. Guiroy is a psychiatrist in Martinez, California
Dr. Guiroy practices at Natividad in Salinas, California, part of Monterey County, CA.
Dr. Guiroy's NPI, 1629263512, was assigned on September 13, 2007. Dr. Guiroy graduated from Mathias Aznar Memorial College of Medicine in 1976. Dr. Guiroy holds California license A63231.
NPI and contact details
- NPI
- 1629263512NPI Registry (opens in a new tab)
- NPI enumeration date
- September 13, 2007
- NPI status
- Active
- Practice phone
- (831) 755-4111
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 76
- Medical school graduation
- 1976
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Don C. Guiroy practices in Salinas and Martinez
Dr. Guiroy's primary practice is Natividad, at 1441 Constitution Boulevard, Salinas, CA 93906 in Monterey County. The practice phone is (831) 755-4111. The NPI Registry lists Dr. Guiroy's practice address as 2500 Alhambra Ave, Martinez, CA 94553.
- NatividadPrimary1441 Constitution Boulevard, Salinas, CA 93906 · Monterey CountyPhone(831) 755-4111
- NPI Registry address2500 Alhambra Ave, Martinez, CA 94553 · Contra Costa CountyPhone(831) 796-1700
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Don C. Guiroy is affiliated with 1 site of care and 2 medical groups
Dr. Guiroy's primary practice is Natividad in Salinas, California, part of Monterey County, CA. The medical group on file is Natividad Medical Center. Dmand AI also links Dr. Guiroy to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Don C. Guiroy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Guiroy practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Natividad | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every hospital where Dr. Guiroy practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across Monterey County, CA and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Don C. Guiroy is one of 6,803 psychiatrists in California
Psychiatry is Dr. Guiroy's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Guiroy is licensed in California.
Specialties and state licenses
- Psychiatry, CaliforniaPrimary
Clinical focus
Dmand AI lists bipolar disorder and schizophrenia among the conditions Dr. Guiroy treats.
Psychiatrists near Dr. Guiroy
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. Don C. Guiroy billed Medicare for 65 services in 2023
CMS data shows 65 Medicare services from Dr. Guiroy across 1 procedure code in 2023. Medicare paid $7,395 for them. Every service was in an office.
Medicare services, 202365
Paid by Medicare$7,395
Procedure codes1
Dr. Guiroy's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Tests and treatments
- 2022: 732023: 6511%
Dr. Guiroy compared with the California median for psychiatrists, 2023
- Dr. Guiroy
- California median
- Medicare services
- 65vs 11945% below
- Part D claims
- 141vs 144Close to median
Medians across 6,809 psychiatrists in California with Dmand AI profiles that report each measure.
Dr. Guiroy's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Guiroy?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Guiroy and other psychiatrists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Don C. Guiroy's patients have a median age of 51
Across all payers, Dmand AI patient panel data puts Dr. Guiroy's median patient age at 51, with 0% women.
Dr. Guiroy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 51
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Don C. Guiroy wrote 291 Medicare Part D claims in 2024
In 2024, Dr. Guiroy wrote 291 Medicare Part D claims for 21 patients. 86% of them were for generic drugs. CMS names the drug for 141 of them, across 7 drugs with 11 or more claims each, at $67,130 in total drug cost. In 2023, CMS named 1,173 claims across 35 drugs.
Part D claims, 2024291
Drugs named by CMS7
Total drug cost$67,130
Part D patients21
Dr. Guiroy's Part D claims by kind of drug, 2024
- Generic251 claims86%
- Brand-name40 claims14%
Dr. Guiroy'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,1732024: 14188%
Drugs named by CMS: 7 in 2024, 35 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
For MedTech and pharma teams
Find psychiatrists like Dr. Guiroy by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Don C. Guiroy has 5 publications on record
Dmand AI links 5 papers to Dr. Guiroy. The most frequent topics are Amyloid, Brain and Deer. Dr. Guiroy has published most often in Acta Neuropathol.
Papers5
Topics Dr. Guiroy writes about most
- Amyloid
- Brain
- Deer
- Amino Acid Sequence
- Nervous System Diseases
- Prion Diseases
- Prions
Recent publications by Dr. Guiroy
Folia Neuropathol
CattleEncephalopathy, Bovine SpongiformMicroscopy, Confocal
Proc Natl Acad Sci U S A
Alzheimer DiseaseAmino Acid SequenceAmyloid
Acta Neuropathol
AmyloidAmyloidosisAstrocytes
See who Dr. Guiroy researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Guiroy works with, so you can find a warm path to the right psychiatrists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Don C. Guiroy received $596 in industry payments from 2016 to 2025
CMS Open Payments shows 19 general payments to Dr. Guiroy from 5 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 95% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $170.
General payments to Dr. Guiroy by program year, 2016 to 2025
General payments to Dr. Guiroy by kind, 2016 to 2025
$596in total
- Food and beverage$56695%
- Education$305%
Companies that paid Dr. Guiroy the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Don C. Guiroy graduated from Mathias Aznar Memorial College of Medicine
Dr. Guiroy graduated from Mathias Aznar Memorial College of Medicine in 1976.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Don C. Guiroy'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Org Hierarchy 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 Data |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Don C. Guiroy
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. Don C. Guiroy's NPI number?
Dr. Don C. Guiroy's NPI number is 1629263512. It was assigned on September 13, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Don C. Guiroy?
Dr. Don C. Guiroy is a psychiatrist in Martinez, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Don C. Guiroy practice?
Dr. Guiroy practices at 1441 Constitution Boulevard, Salinas, CA 93906. Dr. Guiroy also practices at 2500 Alhambra Ave, Martinez, CA 94553. Dr. Guiroy's primary practice is Natividad in Salinas, California, part of Monterey County, CA. Dmand AI also links Dr. Guiroy to 1 medical group.
What is Dr. Don C. Guiroy's office phone number?
The practice phone on file for Dr. Guiroy is (831) 755-4111.
What is Dr. Don C. Guiroy's medical license number?
Dr. Guiroy holds California license A63231.
Which hospitals is Dr. Don C. Guiroy affiliated with?
Dr. Guiroy practices at Natividad in Salinas, California.
What medical group is Dr. Don C. Guiroy part of?
Dr. Guiroy is linked to Natividad Medical Center. Dmand AI links Dr. Guiroy to 1 more medical group.
Does Dr. Don C. Guiroy accept Medicare?
Yes. CMS data shows Dr. Guiroy billed Medicare for 65 services in 2023.
What services does Dr. Don C. Guiroy bill to Medicare?
In 2023, Dr. Guiroy's most billed Medicare services were psychiatric service (90792).
Where did Dr. Don C. Guiroy go to medical school?
Dr. Guiroy graduated from Mathias Aznar Memorial College of Medicine in 1976.
Show 4 more questionsShow fewer questions
What drugs does Dr. Don C. Guiroy prescribe most?
In 2024 Medicare Part D data, Dr. Guiroy's most prescribed drugs by claims were Olanzapine, Bupropion HCl SR and Abilify Maintena.
Has Dr. Don C. Guiroy received payments from drug or device companies?
CMS Open Payments shows $596 in general payments to Dr. Guiroy from 5 companies from 2016 to 2025. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Don C. Guiroy been practicing?
Dr. Guiroy graduated from medical school in 1976, 50 years ago.
Does Dr. Don C. Guiroy do research?
Dmand AI links 5 publications to Dr. Guiroy.
Selling to psychiatry practices?
See psychiatrists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card