Dr. Stephen Douglas Field, DO
- Medicare services, 2022
- 12
- Part D claims, 2024
- 73
- Industry payments
- $402
- Medical group
- 1
- State license
- 1
- Practice address
- 2500 Alhambra Ave, Martinez, CA 94553
- Practice phone
- Call (925) 370-5955
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Martinez Health Center
Martinez, California
Find Dr. Field'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. Stephen Douglas Field is a psychiatrist in Martinez, California
Dr. Field practices at Martinez Health Center in Martinez, California.
Dr. Field's NPI, 1134391287, was assigned on March 28, 2008. Dr. Field graduated from WesternU College of Osteopathic Medicine of the Pacific in 2008. Dr. Field holds California license 20A11017.
- NPI
- 1134391287NPI Registry (opens in a new tab)
- NPI enumeration date
- March 28, 2008
- NPI status
- Active
- Practice phone
- (925) 370-5955
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Stephen Douglas Field practices at Martinez Health Center in Martinez, California
Dr. Field's primary practice is Martinez Health Center, at 2500 Alhambra Ave, Martinez, CA 94553 in Contra Costa County. The practice phone is (925) 370-5955.
- Martinez Health Center2500 Alhambra Ave, Martinez, CA 94553 · Contra Costa CountyPhone(925) 370-5955
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Stephen Douglas Field is affiliated with 1 site of care and 1 medical group
Dr. Field's primary practice is Martinez Health Center in Martinez, California. The medical group on file is West County Adult Mental Health Services.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Stephen Douglas Field's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Field practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Martinez Health Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stephen Douglas Field is one of 6,803 psychiatrists in California
Psychiatry is Dr. Field's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Field is board certified in psychiatry by the American Board of Psychiatry and Neurology. Dr. Field is licensed in California.
Specialties and state licenses
- Psychiatry, CaliforniaPrimary
Psychiatrists near Dr. Field
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. Stephen Douglas Field billed Medicare for 12 services in 2022
CMS data shows 12 Medicare services from Dr. Field across 1 procedure code in 2022, all of them office visits. Medicare paid $655 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Field's Medicare services by type, 2016 to 2022
- 2016
- 2022
- Office and hospital visits
- 2016: 722022: 1283%
Dr. Field compared with the California median for psychiatrists, 2022
- Dr. Field
- California median
- Medicare services
- 12vs 11990% below
- Part D claims
- 16vs 14489% below
Medians across 6,809 psychiatrists in California with Dmand AI profiles that report each measure.
Dr. Field's most billed Medicare procedure codes, 2022
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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stephen Douglas Field wrote 73 Medicare Part D claims in 2024
In 2024, Dr. Field wrote 73 Medicare Part D claims. 67% of them were for generic drugs. CMS names the drug for 16 of them, across 1 drug with 11 or more claims each, at $38,335 in total drug cost. In 2022, CMS named 11 claims across 1 drug.
Dr. Field's Part D claims by kind of drug, 2024
- Generic49 claims67%
- Brand-name24 claims33%
Dr. Field'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, 2022 to 2024
- 2022
- 2024
- Claims for drugs CMS names
- 2022: 112024: 1645%
Drugs named by CMS: 1 in 2024, 1 in 2022.
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
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Dr. Stephen Douglas Field received $402 in industry payments from 2016 to 2019
CMS Open Payments shows 11 general payments to Dr. Field from 2 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $325.
General payments to Dr. Field by program year, 2016 to 2019
Companies that paid Dr. Field the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Stephen Douglas Field graduated from WesternU College of Osteopathic Medicine of the Pacific
Dr. Field graduated from WesternU College of Osteopathic Medicine of the Pacific in 2008.
- Medical school
- Board certified in psychiatry
Source: Dmand AI Professional Profile Data
Sources for Dr. Stephen Douglas Field'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 |
| 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) |
| 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. Stephen Douglas Field
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. Stephen Douglas Field's NPI number?
Dr. Stephen Douglas Field's NPI number is 1134391287. It was assigned on March 28, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen Douglas Field?
Dr. Stephen Douglas Field is a psychiatrist in Martinez, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Stephen Douglas Field practice?
Dr. Field practices at 2500 Alhambra Ave, Martinez, CA 94553. Dr. Field's primary practice is Martinez Health Center in Martinez, California.
What is Dr. Stephen Douglas Field's office phone number?
The practice phone on file for Dr. Field is (925) 370-5955.
What is Dr. Stephen Douglas Field's medical license number?
Dr. Field holds California license 20A11017.
What medical group is Dr. Stephen Douglas Field part of?
Dr. Field is linked to West County Adult Mental Health Services.
Does Dr. Stephen Douglas Field accept Medicare?
Yes. CMS data shows Dr. Field billed Medicare for 12 services in 2022.
Is Dr. Stephen Douglas Field board certified?
Yes. Dr. Field is board certified in psychiatry by the American Board of Psychiatry and Neurology.
What services does Dr. Stephen Douglas Field bill to Medicare?
In 2022, Dr. Field's most billed Medicare services were office visit, established patient (99214).
Where did Dr. Stephen Douglas Field go to medical school?
Dr. Field graduated from WesternU College of Osteopathic Medicine of the Pacific in 2008.
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What drugs does Dr. Stephen Douglas Field prescribe most?
In 2024 Medicare Part D data, Dr. Field's most prescribed drugs by claims were Invega Sustenna.
Has Dr. Stephen Douglas Field received payments from drug or device companies?
CMS Open Payments shows $402 in general payments to Dr. Field from 2 companies from 2016 to 2019. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Stephen Douglas Field been practicing?
Dr. Field graduated from medical school in 2008, 18 years ago.
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