Dr. Gregory Charles Sazima, MD
- Medicare services, 2024
- 1,153
- Medicare patients, 2024
- 58
- Part D claims, 2024
- 1,013
- Industry payments
- $114
- Insurance carriers
- 4
- Practice address
- 1899 E Roseville Pkwy, Roseville, CA 95661
- Practice phone
- Call (916) 797-2248
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Sazima'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 Charles Sazima is a psychiatrist in Roseville, California
Dr. Sazima practices in Roseville, California.
Dr. Sazima's NPI, 1013020783, was assigned on August 16, 2006. Dr. Sazima graduated from University Of Cincinnati College Of Medicine in 1987. Dr. Sazima's California license number on file is G068587.
- NPI
- 1013020783NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8527235142
- NPI enumeration date
- August 16, 2006
- NPI status
- Active
- Practice phone
- (916) 797-2248
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Gregory Charles Sazima's practice address is in Roseville, California
Dr. Sazima's practice address in the NPI Registry is 1899 E Roseville Pkwy, Roseville, CA 95661, in Placer County. The practice phone is (916) 797-2248.
- NPI Registry address1899 E Roseville Pkwy, Roseville, CA 95661 · Placer CountyPhone(916) 797-2248
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Gregory Charles Sazima's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sazima practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Sazima's practice | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Gregory Charles Sazima is one of 6,803 psychiatrists in California
Psychiatry is Dr. Sazima's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Sazima is board certified in psychiatry by the American Board of Psychiatry and Neurology. Dr. Sazima has a license on file in California.
Specialties and state licenses
- Psychiatry, CaliforniaPrimary
Clinical focus
Dmand AI lists anxiety, bipolar disorder, depression, insomnia and schizophrenia among the conditions Dr. Sazima treats.
Psychiatrists near Dr. Sazima
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. Gregory Charles Sazima billed Medicare for 1,153 services in 2024
CMS data shows 1,153 Medicare services from Dr. Sazima across 4 procedure codes in 2024, for 58 Medicare patients. Medicare paid $92,437 for them. Every service was in an office.
Dr. Sazima's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6162024: 5816%
- Tests and treatments
- 2023: 6322024: 5729%
Dr. Sazima compared with the California median for psychiatrists, 2024
- Dr. Sazima
- California median
- Medicare services
- 1,153vs 1199.7 times
- Medicare patients
- 58vs 4141% above
- Part D claims
- 823vs 1445.7 times
Medians across 6,809 psychiatrists in California with Dmand AI profiles that report each measure.
Dr. Sazima'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.
Need commercial claims for Dr. Sazima?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Sazima and other psychiatrists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory Charles Sazima treated 58 Medicare patients in 2024, average age 70
CMS counts 58 Medicare patients who saw Dr. Sazima in 2024. The largest group is 75 to 84, with 23 patients. 75% of them have depression, and 75% have mood disorders. Their average risk score is 1.19, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Sazima's median patient age at 63, with 70% women.
Dr. Sazima's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Sazima's Medicare patients by sex, 2024
- Women4679%
- Men1221%
Chronic conditions among Dr. Sazima's Medicare patients, 2024
- Depression75%
- Mood disorders75%
- Anxiety74%
- High cholesterol67%
- Arthritis55%
- High blood pressure53%
- Bipolar disorder29%
- Diabetes24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Sazima's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women70%
- Men27%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory Charles Sazima wrote 1,013 Medicare Part D claims in 2024
In 2024, Dr. Sazima wrote 1,013 Medicare Part D claims for 80 patients. 99% of them were for generic drugs. CMS names the drug for 823 of them, across 19 drugs with 11 or more claims each, at $19,392 in total drug cost. In 2023, CMS named 887 claims across 24 drugs.
Dr. Sazima's Part D claims by kind of drug, 2024
- Generic1,007 claims99%
- Brand-name and other6 claims1%
Dr. Sazima'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. Sazima's Part D claims, 2024
- Opioids2%23 of 1,013 claims
- Antipsychotics, patients 65 and over6%57 of 1,013 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: 8872024: 8237%
Drugs named by CMS: 19 in 2024, 24 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
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Gregory Charles Sazima received $114 in industry payments in 2019
CMS Open Payments shows 1 general payment to Dr. Sazima from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $114.
Companies that paid Dr. Sazima the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory Charles Sazima graduated from University Of Cincinnati College Of Medicine
Dr. Sazima graduated from University Of Cincinnati College Of Medicine in 1987.
- Medical school
- Board certified in psychiatry
Source: Dmand AI Professional Profile Data
Dr. Gregory Charles Sazima accepts plans from 4 insurance carriers
Dr. Sazima is in network with 4 carriers, including Blue Cross Blue Shield of Massachusetts, HCSC and CMS Medicare. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Massachusetts
- HCSC
- CMS Medicare
- United Healthcare
Plan types Dr. Sazima accepts, by number of carriers
- Medicare4
- PPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Gregory Charles Sazima'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 |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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 Charles Sazima
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 Charles Sazima's NPI number?
Dr. Gregory Charles Sazima's NPI number is 1013020783. It was assigned on August 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Charles Sazima?
Dr. Gregory Charles Sazima is a psychiatrist in Roseville, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Gregory Charles Sazima practice?
Dr. Sazima practices at 1899 E Roseville Pkwy, Roseville, CA 95661.
What is Dr. Gregory Charles Sazima's office phone number?
The practice phone on file for Dr. Sazima is (916) 797-2248.
What is Dr. Gregory Charles Sazima's medical license number?
Dr. Sazima's California license number on file is G068587.
Does Dr. Gregory Charles Sazima accept Medicare?
Yes. CMS data shows Dr. Sazima billed Medicare for 1,153 services in 2024.
How many Medicare patients does Dr. Gregory Charles Sazima see?
CMS counts 58 Medicare patients who saw Dr. Sazima in 2024, with an average age of 70.
Is Dr. Gregory Charles Sazima board certified?
Yes. Dr. Sazima is board certified in psychiatry by the American Board of Psychiatry and Neurology.
What services does Dr. Gregory Charles Sazima bill to Medicare?
In 2024, Dr. Sazima's most billed Medicare services were office visit, established patient (99214), psychiatric service (90833) and psychiatric service (90838).
Where did Dr. Gregory Charles Sazima go to medical school?
Dr. Sazima graduated from University Of Cincinnati College Of Medicine in 1987.
Show 4 more questionsShow fewer questions
What drugs does Dr. Gregory Charles Sazima prescribe most?
In 2024 Medicare Part D data, Dr. Sazima's most prescribed drugs by claims were Alprazolam, Lorazepam and Escitalopram Oxalate.
Has Dr. Gregory Charles Sazima received payments from drug or device companies?
CMS Open Payments shows $114 in general payments to Dr. Sazima from 1 company from 2019 to 2019. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Gregory Charles Sazima been practicing?
Dr. Sazima graduated from medical school in 1987, 39 years ago.
What insurance does Dr. Gregory Charles Sazima accept?
Dr. Sazima is in network with 4 carriers, including Blue Cross Blue Shield of Massachusetts, HCSC and CMS Medicare. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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