Gregory Dahlquist, MD
Hospice and Palliative Medicine (Family Medicine) Physician · Pomona, CA
Gregory Dahlquist, MD is a hospice and palliative medicine (family medicine) physician with a practice address in Pomona, California, and NPI 1558362467, issued on Aug 2, 2005. Check the license (California G56074, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gregory Dahlquist
- Credential
- MD
- Primary taxonomy
- Hospice and Palliative Medicine (Family Medicine) Physician 207QH0002X
- License number
- G56074 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1770 N Orange Grove Ave, Pomona, CA 91767
- Phone
- (909) 469-9494
- Enumerated
- Aug 2, 2005
- Record last updated
- Mar 7, 2023
- Fax
- (909) 628-6087
- Medicare enrollment
- Enrolled (PECOS I20100819000375); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1984
- Entity
- Type 1 · individual
8 nearest hospice and palliative medicine (family medicine) physician records → All 128 in California → Look up another NPI →
Also registered at 1770 N Orange Grove Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Odilia AnthonyStudent in an Organized Health Care Education/Training Program1104971217
- Heather CoffinStudent in an Organized Health Care Education/Training Program1750793600
- Marilyn Deguzman, DOFamily Medicine Physician1780761718
- Lynne Diamond, MDHospice and Palliative Medicine (Family Medicine) Physician1316947351
- Crystal EstradaFamily Medicine Physician1952003899
- Popak FirooznamFamily Medicine Physician1285709725
Verify Gregory Dahlquist in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G56074Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average hospice and palliative medicine (family medicine) physician in 2024
180 Medicare Part D claims for 33 beneficiaries, against an average of 1,129 among the 731 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Amlodipine Besylate12 claims
- Xarelto12 claims
- Febuxostat11 claims
- Omeprazole11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- San Bernardino Mountains Community Hospital DistrictLake Arrowhead, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Dahlquist among 128 hospice and palliative medicine (family medicine) physician records in California
Gregory Dahlquist, MD is one of 128 hospice and palliative medicine (family medicine) physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1984 · median 2009 among the 80 with a school on file
- Record last updated2023 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QH0002X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospice and Palliative Medicine (Family Medicine) Physician providers in California
There are 128 hospice and palliative medicine (family medicine) physician records in California.
All 128 in California → Every provider in Pomona → Hospice and Palliative Medicine (Family Medicine) Physician nationwide →
The 8 hospice and palliative medicine (family medicine) physician records with the nearest ZIP codes
- Lynne Diamond, MDPomona, CA 917671316947351
- Christine Kwon, MDPomona, CA 917671013414515
- Bradley Restivo, M.D.Upland, CA 917861245789916
- Nader Yacoub, MDLa Puente, CA 917461194848580
- Bijan Badihian, D.O.Claremont, CA 917111912128695
- Kim Ann Dang, MDLa Mesa, CA 919421760872188
- Nicki Rao, M.D.La Mesa, CA 919421154717619
- Frederic Jackson, DO, MPHEscondido, CA 920271255407318
Common questions
What is Gregory Dahlquist, MD's NPI number?
Gregory Dahlquist, MD's National Provider Identifier (NPI) is 1558362467, issued on Aug 2, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Dahlquist, MD located?
The NPPES record lists a practice address at 1770 N Orange Grove Ave, Pomona, CA, 91767. Phone: (909) 469-9494. Providers update this record themselves, so call before visiting.
How can I verify Gregory Dahlquist, MD's license?
NPPES lists California license number G56074, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Dahlquist, MD prescribe under Medicare Part D?
In 2024, Gregory Dahlquist, MD had 180 Medicare Part D claims for 33 beneficiaries; the average among hospice and palliative medicine (family medicine) physician prescribers was 1,129. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.