Dr. Gregory A. Hatfield, MD
- Medicare services, 2021
- 6,639
- Affiliated sites
- 3
- Medical groups
- 7
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 15630 18th Ave, Clearlake, CA 95422
- Practice phone
- Call (707) 994-6486
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Adventist Health Clear Lake
Clearlake, California
Find Dr. Hatfield'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. Gregory A. Hatfield is a diagnostic radiologist in Clearlake, California
Dr. Hatfield practices at Adventist Health Clear Lake in Clearlake, California.
Dr. Hatfield's NPI, 1457392664, was assigned on June 9, 2006. Dr. Hatfield graduated from University of Minnesota Medical School in 1983. Dr. Hatfield holds Minnesota license 30450.
- NPI
- 1457392664NPI Registry (opens in a new tab)
- NPI enumeration date
- June 9, 2006
- NPI status
- Active
- Practice phone
- (707) 994-6486
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Gregory A. Hatfield practices at Adventist Health Clear Lake in Clearlake, California
Dr. Hatfield's primary practice is Adventist Health Clear Lake, at 15630 18th Ave, Clearlake, CA 95422 in Lake County. The practice phone is (707) 994-6486.
- Adventist Health Clear Lake15630 18th Ave, Clearlake, CA 95422 · Lake CountyPhone(707) 994-6486
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gregory A. Hatfield is affiliated with 4 sites of care and 7 medical groups
Dr. Hatfield's primary practice is Adventist Health Clear Lake in Clearlake, California. The medical group on file is Buffalo Hospital. Dmand AI also links Dr. Hatfield to 6 more medical groups and 3 group practices and clinics, each 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. Gregory A. Hatfield's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hatfield practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Adventist Health Clear Lake | Available with a free account |
| +3 more sites and 6 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory A. Hatfield is one of 4,096 diagnostic radiologists in California
Diagnostic radiology is Dr. Hatfield's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Hatfield is licensed in Minnesota.
Specialties and state licenses
- Diagnostic radiology, MinnesotaPrimary
Diagnostic radiologists near Dr. Hatfield
Counts of diagnostic radiologists 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. Gregory A. Hatfield billed Medicare for 6,639 services in 2021
CMS data shows 6,639 Medicare services from Dr. Hatfield across 21 procedure codes in 2021. Medicare paid $80,864 for them.
Dr. Hatfield's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Other services
- 2020: 5,3342021: 5,0815%
- Imaging
- 2020: 1,3462021: 1,55816%
Where Dr. Hatfield's Medicare services took place, 2021
- In an office5,33480%
- In a facility1,30520%
Dr. Hatfield compared with the California median for diagnostic radiologists, 2021
- Dr. Hatfield
- California median
- Medicare services
- 6,639vs 2,2812.9 times
Medians across 3,734 diagnostic radiologists in California with Dmand AI profiles that report each measure.
Dr. Hatfield's most billed Medicare procedure codes, 2021
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. Hatfield and other diagnostic radiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory A. Hatfield's patients have a median age of 43
Across all payers, Dmand AI patient panel data puts Dr. Hatfield's median patient age at 43, with 100% women.
Dr. Hatfield's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 43
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
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Dr. Gregory A. Hatfield graduated from University of Minnesota Medical School
Dr. Hatfield graduated from University of Minnesota Medical School in 1983.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory A. Hatfield'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 Data |
| 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. Gregory A. Hatfield
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. Gregory A. Hatfield's NPI number?
Dr. Gregory A. Hatfield's NPI number is 1457392664. It was assigned on June 9, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory A. Hatfield?
Dr. Gregory A. Hatfield is a diagnostic radiologist in Clearlake, California. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Gregory A. Hatfield practice?
Dr. Hatfield practices at 15630 18th Ave, Clearlake, CA 95422. Dr. Hatfield's primary practice is Adventist Health Clear Lake in Clearlake, California. Dmand AI also links Dr. Hatfield to 6 medical groups and 3 group practices and clinics.
What is Dr. Gregory A. Hatfield's office phone number?
The practice phone on file for Dr. Hatfield is (707) 994-6486.
What is Dr. Gregory A. Hatfield's medical license number?
Dr. Hatfield holds Minnesota license 30450.
What medical group is Dr. Gregory A. Hatfield part of?
Dr. Hatfield is linked to Buffalo Hospital. Dmand AI links Dr. Hatfield to 6 more medical groups.
Does Dr. Gregory A. Hatfield accept Medicare?
Yes. CMS data shows Dr. Hatfield billed Medicare for 6,639 services in 2021.
What services does Dr. Gregory A. Hatfield bill to Medicare?
In 2021, Dr. Hatfield's most billed Medicare services were medical supplies or transport (A9585), medicare temporary code (Q9967) and diagnostic imaging (70450).
Where did Dr. Gregory A. Hatfield go to medical school?
Dr. Hatfield graduated from University of Minnesota Medical School in 1983.
How long has Dr. Gregory A. Hatfield been practicing?
Dr. Hatfield graduated from medical school in 1983, 43 years ago.
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