Dr. Gregor Paronian, MD
- Medicare services, 2024
- 10,879
- Medicare patients, 2024
- 737
- Part D claims, 2024
- 46,817
- MIPS score, 2024
- 75
- Hospital affiliations
- 1
- Practice address
- 1713 E Walnut St, Pasadena, CA 91106-1611
- Practice phone
- Call (626) 696-3607
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Southern California Internists Medical Group
Primary care practice · Pasadena, California
Find Dr. Paronian'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. Gregor Paronian is an internist in Pasadena, California
Dr. Paronian practices at Southern California Internists Medical Group in Pasadena, California.
Dr. Paronian's NPI, 1366627945, was assigned on January 2, 2008. Dr. Paronian graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 2007. Dr. Paronian holds California license A107875.
- NPI
- 1366627945NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1557510401
- NPI enumeration date
- January 2, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (626) 696-3607
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregor Paronian practices at Southern California Internists Medical Group in Pasadena, California
Dr. Paronian's primary practice is Southern California Internists Medical Group, at 1713 E Walnut St, Pasadena, CA 91106-1611. The practice phone is (626) 696-3607.
- Southern California Internists Medical Group1713 E Walnut St, Pasadena, CA 91106-1611Phone(626) 696-3607
Source: Dmand AI Affiliation Data
Dr. Gregor Paronian is affiliated with 9 sites of care and 1 medical group
Dr. Paronian's primary practice is Southern California Internists Medical Group in Pasadena, California. Dr. Paronian is also affiliated with Huntington Hospital. The medical group on file is Southern California Internists Medical Group. Dmand AI also links Dr. Paronian to 5 more home health agencies and 2 hospices, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gregor Paronian's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Paronian practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Southern California Internists Medical Group | Available with a free account |
| +8 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregor Paronian is one of 16,751 internists in California
Internal medicine is Dr. Paronian's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Paronian is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Paronian's licenses on file in 2 states: California and Nevada.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Nevada license
Clinical focus
Dmand AI lists acid reflux, acute sinusitis, acute skin infection, alzheimer's disease, aneurysm, anxiety, arthritis and asthma among the conditions Dr. Paronian treats.
Internists near Dr. Paronian
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. Gregor Paronian billed Medicare for 10,879 services in 2024
CMS data shows 10,879 Medicare services from Dr. Paronian across 23 procedure codes in 2024, for 737 Medicare patients. Medicare paid $511,371 for them. Every service was in an office.
Dr. Paronian's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7,1562024: 9,07927%
- Surgery
- 2023: 6742024: 1,06358%
- Tests and treatments
- 2023: 2892024: 3128%
- Other services
- 2023: 2872024: 2793%
- Drugs given in the office
- 2023: 1142024: 14628%
Dr. Paronian compared with the California median for internists, 2024
- Dr. Paronian
- California median
- Medicare services
- 10,879vs 36130.1 times
- Medicare patients
- 737vs 1514.9 times
- Part D claims
- 45,913vs 421109.1 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Paronian'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. Paronian?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Paronian and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregor Paronian treated 737 Medicare patients in 2024, average age 75
CMS counts 737 Medicare patients who saw Dr. Paronian in 2024. The largest group is 65 to 74, with 346 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 63% are also on Medicaid. Their average risk score is 1.43, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Paronian's median patient age at 61, with 51% women.
Dr. Paronian's Medicare patients by age, 2024
Dr. Paronian's Medicare patients by sex, 2024
- Women40555%
- Men33245%
Chronic conditions among Dr. Paronian's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis69%
- Ischemic heart disease45%
- Diabetes44%
- Mood disorders41%
- Depression38%
- Anxiety36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Paronian's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women51%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregor Paronian wrote 46,817 Medicare Part D claims in 2024
In 2024, Dr. Paronian wrote 46,817 Medicare Part D claims for 1,190 patients. 81% of them were for generic drugs. CMS names the drug for 45,913 of them, across 310 drugs with 11 or more claims each, at $5,090,372 in total drug cost. In 2023, CMS named 39,974 claims across 300 drugs.
Dr. Paronian's Part D claims by kind of drug, 2024
- Generic38,136 claims81%
- Brand-name8,015 claims17%
- Other666 claims1%
Dr. Paronian'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. Paronian's Part D claims, 2024
- Opioids1%697 of 46,817 claims
- Antibiotics2%794 of 46,817 claims
- Antipsychotics, patients 65 and over0%218 of 46,817 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: 39,9742024: 45,91315%
Drugs named by CMS: 310 in 2024, 300 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
Dr. Gregor Paronian scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Paronian for performance year 2024, reported individually. Dr. Paronian accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Paronian as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- MIPS final score, 2024
- 75 of 100
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Gregor Paronian received $22,086 in industry payments from 2016 to 2025
CMS Open Payments shows 1,119 general payments to Dr. Paronian from 72 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $2,945.
General payments to Dr. Paronian by program year, 2016 to 2025
General payments to Dr. Paronian by kind, 2016 to 2025
- Food and beverage$22,063100%
- Education$230%
Companies that paid Dr. Paronian the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregor Paronian graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science
Dr. Paronian graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 2007.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Gregor Paronian accepts plans from 16 insurance carriers
Dr. Paronian is in network with 16 carriers, including Aetna, United Healthcare and Elevance. HMO plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Elevance
- HCSC
- LA Care
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- Alliant Health Plans
- +8 more carriersWith a free account
Plan types Dr. Paronian accepts, by number of carriers
- HMO8
- PPO8
- Medicare7
- EPO4
- POS3
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Gregor Paronian'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 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)Clinician Public Reporting: Overall MIPS Performance (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. Gregor Paronian
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. Gregor Paronian's NPI number?
Dr. Gregor Paronian's NPI number is 1366627945. It was assigned on January 2, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregor Paronian?
Dr. Gregor Paronian is an internist in Pasadena, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Gregor Paronian practice?
Dr. Paronian practices at 1713 E Walnut St, Pasadena, CA 91106-1611. Dr. Paronian's primary practice is Southern California Internists Medical Group in Pasadena, California. Dmand AI also links Dr. Paronian to 5 home health agencies and 2 hospices.
What is Dr. Gregor Paronian's office phone number?
The practice phone on file for Dr. Paronian is (626) 696-3607.
What is Dr. Gregor Paronian's medical license number?
Dr. Paronian holds California license A107875, one of the licenses on file in 2 states.
Which states has Dr. Gregor Paronian been licensed in?
Dmand AI has state licenses on file for Dr. Paronian in California (2009 to 2027) and Nevada (2022 to 2023).
Which hospitals is Dr. Gregor Paronian affiliated with?
Dr. Paronian is affiliated with Huntington Hospital.
What medical group is Dr. Gregor Paronian part of?
Dr. Paronian is linked to Southern California Internists Medical Group.
Does Dr. Gregor Paronian accept Medicare?
Yes. CMS data shows Dr. Paronian billed Medicare for 10,879 services in 2024, and Dr. Paronian accepts Medicare assignment.
Does Dr. Gregor Paronian offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Paronian as offering telehealth services.
Show 9 more questionsShow fewer questions
What is Dr. Gregor Paronian's MIPS score?
Dr. Paronian's MIPS final score for performance year 2024 is 75 out of 100, reported individually.
How many Medicare patients does Dr. Gregor Paronian see?
CMS counts 737 Medicare patients who saw Dr. Paronian in 2024, with an average age of 75.
Is Dr. Gregor Paronian board certified?
Yes. Dr. Paronian is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Gregor Paronian bill to Medicare?
In 2024, Dr. Paronian's most billed Medicare services were care management and other visits (99458), office visit, established patient (99214) and care management and other visits (99457).
Where did Dr. Gregor Paronian go to medical school?
Dr. Paronian graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 2007.
What drugs does Dr. Gregor Paronian prescribe most?
In 2024 Medicare Part D data, Dr. Paronian's most prescribed drugs by claims were Rosuvastatin Calcium, Atorvastatin Calcium and Levothyroxine Sodium.
Has Dr. Gregor Paronian received payments from drug or device companies?
CMS Open Payments shows $22,086 in general payments to Dr. Paronian from 72 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Gregor Paronian been practicing?
Dr. Paronian graduated from medical school in 2007, 19 years ago.
What insurance does Dr. Gregor Paronian accept?
Dr. Paronian is in network with 16 carriers, including Aetna, United Healthcare and Elevance. HMO plans come from the most carriers, 8. Check the plan with the practice before a visit.
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