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Dr. Gregory L. Peterfreund, MD, PhD
NPI1134532203PAC ID8022235332
- Medicare services, 2024
- 27
- Medicare patients, 2024
- 144
- Publications
- 3
- Hospital affiliations
- 1
- Industry payments
- $211
- Practice address
- 2315 Stockton Boulevard, Sacramento, CA 95817
- Practice phone
- Call (916) 734-2011
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Peterfreund'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 L. Peterfreund is an anesthesiologist in Sacramento, California
Dr. Peterfreund practices at UC Davis Medical Center in Sacramento, California, part of University of California Health.
Dr. Peterfreund's NPI, 1134532203, was assigned on June 6, 2014. Dr. Peterfreund graduated from Perelman School of Medicine - Philadelphia in 2014. Dr. Peterfreund's California license number on file is A153364.
NPI and contact details
- NPI
- 1134532203NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022235332
- NPI enumeration date
- June 6, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (916) 734-2011
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory L. Peterfreund practices at UC Davis Medical Center in Sacramento, California
Dr. Peterfreund's primary practice is UC Davis Medical Center, at 2315 Stockton Boulevard, Sacramento, CA 95817 in Sacramento County. The practice phone is (916) 734-2011.
- UC Davis Medical Center2315 Stockton Boulevard, Sacramento, CA 95817 · Sacramento CountyPhone(916) 734-2011
Source: Dmand AI Affiliation Data
Dr. Gregory L. Peterfreund is affiliated with 2 sites of care and 2 medical groups
Dr. Peterfreund's primary practice is UC Davis Medical Center in Sacramento, California, part of University of California Health. The medical group on file is UC Davis Medical Group. Dmand AI also links Dr. Peterfreund to 1 more group practice or clinic and 1 medical group, each named with a free account.
UC Davis Medical Group1 group practice or clinicName with a free account1 medical groupName with a free account
See all 4 affiliations for Dr. PeterfreundSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory L. Peterfreund's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Peterfreund practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UC Davis Medical Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory L. Peterfreund is one of 6,593 anesthesiologists in California
Anesthesiology is Dr. Peterfreund's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Peterfreund is board certified in anesthesiology by the American Board of Anesthesiology. Dmand AI has Dr. Peterfreund's licenses on file in 2 states: California and Massachusetts.
Specialties and state licenses
- Anesthesiology, CaliforniaPrimary
- Massachusetts license
Anesthesiologists near Dr. Peterfreund
Counts of anesthesiologists with a Dmand AI profile, by place and practice. Each opens the list.
6,593anesthesiologists in California309anesthesiologists in Sacramento84anesthesiologists at UC Davis Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Gregory L. Peterfreund billed Medicare for 27 services in 2024
CMS data shows 27 Medicare services from Dr. Peterfreund across 1 procedure code in 2024, for 144 Medicare patients. Medicare paid $938 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 202427
Medicare patients144
Paid by Medicare$938
Procedure codes1
Dr. Peterfreund's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 302024: 2710%
- Anesthesia
- 2023: 122024: 0100%
- Office and hospital visits
- 2023: 1282024: 0100%
Dr. Peterfreund compared with the California median for anesthesiologists, 2024
- Dr. Peterfreund
- California median
- Medicare services
- 27vs 7263% below
- Medicare patients
- 144vs 143Close to median
Medians across 5,562 anesthesiologists in California with Dmand AI profiles that report each measure.
Dr. Peterfreund'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. Peterfreund?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Peterfreund and other anesthesiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory L. Peterfreund treated 144 Medicare patients in 2024, average age 69
CMS counts 144 Medicare patients who saw Dr. Peterfreund in 2024. The largest group is 65 to 74, with 64 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 40% are also on Medicaid. Their average risk score is 2.54, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Peterfreund's median patient age at 55, with 55% women.
Medicare patients, 2024144
Average age69
Average risk score2.54
Also on Medicaid40%
Dr. Peterfreund's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Peterfreund's Medicare patients by sex, 2024
- Women6948%
- Men7552%
Chronic conditions among Dr. Peterfreund's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Diabetes46%
- Ischemic heart disease45%
- Chronic kidney disease36%
- Mood disorders35%
- Anxiety33%
Share of Medicare patients with each condition. A patient can have several.
Dr. Peterfreund's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Gregory L. Peterfreund takes part in Medicare
Dr. Peterfreund accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Gregory L. Peterfreund has 3 publications on record
Dmand AI links 3 papers to Dr. Peterfreund in 2012. Dr. Peterfreund's most frequent co-authors are Michael Abbott Bachman, MD and David Andrew Hill, MD, PhD.
Papers3
Dr. Peterfreund's most frequent co-authors
Recent publications by Dr. Peterfreund
Catheterization, Central VenousDrug Delivery SystemsInfusions, Intravenous
See who Dr. Peterfreund researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Peterfreund works with, so you can find a warm path to the right anesthesiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Gregory L. Peterfreund received $211 in industry payments from 2023 to 2025
CMS Open Payments shows 4 general payments to Dr. Peterfreund from 2 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $121.
General payments to Dr. Peterfreund by program year, 2023 to 2025
Companies that paid Dr. Peterfreund the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory L. Peterfreund graduated from Perelman School of Medicine - Philadelphia
Dr. Peterfreund graduated from Perelman School of Medicine - Philadelphia in 2014.
- Medical school
- Board certified in anesthesiology
- Board certified in critical care medicine
Source: Dmand AI Professional Profile Data
Dr. Gregory L. Peterfreund accepts plans from 9 insurance carriers
Dr. Peterfreund is in network with 9 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- +1 more carriersWith a free account
Plan types Dr. Peterfreund accepts, by number of carriers
- Medicare7
- PPO6
- HMO3
- POS3
- EPO2
- Medicaid2
Source: Dmand AI Insurance Network Data
Sources for Dr. Gregory L. Peterfreund'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand 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 DataMedicare Physician & Other Practitioners - 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) |
| 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 |
| 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 L. Peterfreund
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 L. Peterfreund's NPI number?
Dr. Gregory L. Peterfreund's NPI number is 1134532203. It was assigned on June 6, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory L. Peterfreund?
Dr. Gregory L. Peterfreund is an anesthesiologist in Sacramento, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Gregory L. Peterfreund practice?
Dr. Peterfreund practices at 2315 Stockton Boulevard, Sacramento, CA 95817. Dr. Peterfreund's primary practice is UC Davis Medical Center in Sacramento, California, part of University of California Health. Dmand AI also links Dr. Peterfreund to 1 group practice or clinic and 1 medical group.
What is Dr. Gregory L. Peterfreund's office phone number?
The practice phone on file for Dr. Peterfreund is (916) 734-2011.
What is Dr. Gregory L. Peterfreund's medical license number?
Dr. Peterfreund's California license number on file is A153364, one of the licenses on file in 2 states.
Which states has Dr. Gregory L. Peterfreund been licensed in?
Dmand AI has state licenses on file for Dr. Peterfreund in California (2017 to 2025) and Massachusetts (2014 to 2018).
Which hospitals is Dr. Gregory L. Peterfreund affiliated with?
Dr. Peterfreund practices at UC Davis Medical Center in Sacramento, California.
What medical group is Dr. Gregory L. Peterfreund part of?
Dr. Peterfreund is linked to UC Davis Medical Group. Dmand AI links Dr. Peterfreund to 1 more medical group.
Does Dr. Gregory L. Peterfreund accept Medicare?
Yes. CMS data shows Dr. Peterfreund billed Medicare for 27 services in 2024, and Dr. Peterfreund accepts Medicare assignment.
How many Medicare patients does Dr. Gregory L. Peterfreund see?
CMS counts 144 Medicare patients who saw Dr. Peterfreund in 2024, with an average age of 69.
Show 8 more questionsShow fewer questions
Is Dr. Gregory L. Peterfreund board certified?
Yes. Dr. Peterfreund is board certified in anesthesiology by the American Board of Anesthesiology.
What services does Dr. Gregory L. Peterfreund bill to Medicare?
In 2024, Dr. Peterfreund's most billed Medicare services were surgery: heart and blood vessels (36620).
Where did Dr. Gregory L. Peterfreund go to medical school?
Dr. Peterfreund graduated from Perelman School of Medicine - Philadelphia in 2014.
Has Dr. Gregory L. Peterfreund received payments from drug or device companies?
CMS Open Payments shows $211 in general payments to Dr. Peterfreund from 2 companies from 2023 to 2025. The largest total came from Abbott Laboratories.
How long has Dr. Gregory L. Peterfreund been practicing?
Dr. Peterfreund graduated from medical school in 2014, 12 years ago.
Does Dr. Gregory L. Peterfreund do research?
Dmand AI links 3 publications to Dr. Peterfreund.
Who does Dr. Gregory L. Peterfreund publish with?
Dr. Peterfreund's most frequent co-authors are Michael Abbott Bachman, MD (1 shared paper) and David Andrew Hill, MD, PhD (1 shared paper).
What insurance does Dr. Gregory L. Peterfreund accept?
Dr. Peterfreund is in network with 9 carriers, including Elevance, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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