Dr. Gregory Michael Roybal, MD
- Medicare services, 2024
- 133
- Medicare patients, 2024
- 42
- Part D claims, 2024
- 594
- Hospital affiliations
- 2
- Medical group
- 1
- Practice address
- 245 S Fetterly Ave, Los Angeles, CA 90022
- Practice phone
- Call (323) 780-2214
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Edward R. Roybal Comprehensive Health Center
Los Angeles, California
Find Dr. Roybal'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 Michael Roybal is an internist in Los Angeles, California
Dr. Roybal practices at Edward R. Roybal Comprehensive Health Center in Los Angeles, California.
Dr. Roybal's NPI, 1780734491, was assigned on January 12, 2007. Dr. Roybal graduated from Keck School of Medicine of USC in 1994. Dr. Roybal holds California license A55881.
- NPI
- 1780734491NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274753546
- NPI enumeration date
- January 12, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (323) 780-2214
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory Michael Roybal practices at Edward R. Roybal Comprehensive Health Center in Los Angeles, California
Dr. Roybal's primary practice is Edward R. Roybal Comprehensive Health Center, at 245 S Fetterly Ave, Los Angeles, CA 90022 in Los Angeles County. The practice phone is (323) 780-2214.
- Edward R. Roybal Comprehensive Health Center245 S Fetterly Ave, Los Angeles, CA 90022 · Los Angeles CountyPhone(323) 780-2214
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Gregory Michael Roybal is affiliated with 4 sites of care and 1 medical group
Dr. Roybal's primary practice is Edward R. Roybal Comprehensive Health Center in Los Angeles, California. Dr. Roybal is also affiliated with Los Angeles General Medical Center. The medical group on file is Harbor-UCLA Medical Center. Dmand AI also links Dr. Roybal to 1 more hospital and 1 group practice or clinic, 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 Michael Roybal's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Roybal practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Edward R. Roybal Comprehensive Health Center | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory Michael Roybal is one of 16,751 internists in California
Internal medicine is Dr. Roybal's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Roybal is board certified in internal medicine by the American Board of Internal Medicine. Dr. Roybal is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acute gastroduodenitis, arthritis, carpal tunnel syndrome, chronic anemia, chronic diabetes, chronic hypertension, chronic lung disease and coronary artery disease among the conditions Dr. Roybal treats.
Internists near Dr. Roybal
Counts of internists 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 Michael Roybal billed Medicare for 133 services in 2024
CMS data shows 133 Medicare services from Dr. Roybal across 2 procedure codes in 2024, for 42 Medicare patients. Medicare paid $4,640 for them. Every service was in an office.
Dr. Roybal's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 842024: 6918%
- Surgery
- 2023: 792024: 6419%
Dr. Roybal compared with the California median for internists, 2024
- Dr. Roybal
- California median
- Medicare services
- 133vs 36163% below
- Medicare patients
- 42vs 15172% below
- Part D claims
- 314vs 42125% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Roybal'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Roybal and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory Michael Roybal treated 42 Medicare patients in 2024, average age 74
CMS counts 42 Medicare patients who saw Dr. Roybal in 2024. The largest group is 65 to 74, with 21 patients. 75% of them have high blood pressure, and 71% have diabetes. 100% are also on Medicaid. Their average risk score is 1.24, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Roybal's median patient age at 60, with 59% women.
Dr. Roybal's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Roybal's Medicare patients by sex, 2024
- Women2764%
- Men1536%
Chronic conditions among Dr. Roybal's Medicare patients, 2024
- High blood pressure75%
- Diabetes71%
- High cholesterol71%
- Chronic kidney disease43%
- Ischemic heart disease36%
- Arthritis33%
- Heart failure26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Roybal's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 60
Patient panel by sex, all payers
- Women59%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory Michael Roybal wrote 594 Medicare Part D claims in 2024
In 2024, Dr. Roybal wrote 594 Medicare Part D claims for 41 patients. 87% of them were for generic drugs. CMS names the drug for 314 of them, across 11 drugs with 11 or more claims each, at $2,912 in total drug cost. In 2023, CMS named 511 claims across 23 drugs.
Dr. Roybal's Part D claims by kind of drug, 2024
- Generic519 claims87%
- Brand-name and other75 claims13%
Dr. Roybal'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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5112024: 31439%
Drugs named by CMS: 11 in 2024, 23 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
How Dr. Gregory Michael Roybal takes part in Medicare
Dr. Roybal 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 Michael Roybal graduated from Keck School of Medicine of USC
Dr. Roybal graduated from Keck School of Medicine of USC in 1994.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Gregory Michael Roybal accepts plans from 1 insurance carrier
Dr. Roybal is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
Source: Dmand AI Insurance Network Data
Sources for Dr. Gregory Michael Roybal'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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 Michael Roybal
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 Michael Roybal's NPI number?
Dr. Gregory Michael Roybal's NPI number is 1780734491. It was assigned on January 12, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory Michael Roybal?
Dr. Gregory Michael Roybal is an internist in Los Angeles, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Gregory Michael Roybal practice?
Dr. Roybal practices at 245 S Fetterly Ave, Los Angeles, CA 90022. Dr. Roybal's primary practice is Edward R. Roybal Comprehensive Health Center in Los Angeles, California. Dmand AI also links Dr. Roybal to 1 hospital and 1 group practice or clinic.
What is Dr. Gregory Michael Roybal's office phone number?
The practice phone on file for Dr. Roybal is (323) 780-2214.
What is Dr. Gregory Michael Roybal's medical license number?
Dr. Roybal holds California license A55881.
Which hospitals is Dr. Gregory Michael Roybal affiliated with?
Dr. Roybal is affiliated with Los Angeles General Medical Center. Dmand AI links Dr. Roybal to 1 more hospital.
What medical group is Dr. Gregory Michael Roybal part of?
Dr. Roybal is linked to Harbor-UCLA Medical Center.
Does Dr. Gregory Michael Roybal accept Medicare?
Yes. CMS data shows Dr. Roybal billed Medicare for 133 services in 2024, and Dr. Roybal accepts Medicare assignment.
How many Medicare patients does Dr. Gregory Michael Roybal see?
CMS counts 42 Medicare patients who saw Dr. Roybal in 2024, with an average age of 74.
Is Dr. Gregory Michael Roybal board certified?
Yes. Dr. Roybal is board certified in internal medicine by the American Board of Internal Medicine.
Show 5 more questionsShow fewer questions
What services does Dr. Gregory Michael Roybal bill to Medicare?
In 2024, Dr. Roybal's most billed Medicare services were office visit, established patient (99213) and surgery: heart and blood vessels (36415).
Where did Dr. Gregory Michael Roybal go to medical school?
Dr. Roybal graduated from Keck School of Medicine of USC in 1994.
What drugs does Dr. Gregory Michael Roybal prescribe most?
In 2024 Medicare Part D data, Dr. Roybal's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Amlodipine Besylate.
How long has Dr. Gregory Michael Roybal been practicing?
Dr. Roybal graduated from medical school in 1994, 32 years ago.
What insurance does Dr. Gregory Michael Roybal accept?
Dr. Roybal is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
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