Dr. Gregory L. Hirsch, MD
- Medicare services, 2023
- 12
- Part D claims, 2024
- 366
- Hospital affiliations
- 1
- Industry payments
- $3,805
- Medical groups
- 3
- Practice address
- 4002 Vista Way, Oceanside, CA 92056
- Practice phone
- Call (760) 724-8411
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Hirsch's professional email, personal email and mobile number
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Dr. Gregory L. Hirsch is a pulmonologist in Oceanside, California
Dr. Hirsch practices at Sharp Tri-City Medical Center in Oceanside, California, part of Sharp HealthCare.
Dr. Hirsch's NPI, 1639287071, was assigned on August 27, 2006. Dr. Hirsch holds California license G40467.
- NPI
- 1639287071NPI Registry (opens in a new tab)
- NPI enumeration date
- August 27, 2006
- NPI status
- Active
- Practice phone
- (760) 724-8411
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 74
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Gregory L. Hirsch practices at Sharp Tri-City Medical Center in Oceanside, California
Dr. Hirsch's primary practice is Sharp Tri-City Medical Center, at 4002 Vista Way, Oceanside, CA 92056 in San Diego County. The practice phone is (760) 724-8411.
- Sharp Tri-City Medical Center4002 Vista Way, Oceanside, CA 92056 · San Diego CountyPhone(760) 724-8411
Source: Dmand AI Affiliation Data
Dr. Gregory L. Hirsch is affiliated with 2 sites of care and 3 medical groups
Dr. Hirsch's primary practice is Sharp Tri-City Medical Center in Oceanside, California, part of Sharp HealthCare. The medical group on file is Hilo Benioff Medical Center. Dmand AI also links Dr. Hirsch to 2 more medical groups and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gregory L. Hirsch's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hirsch practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sharp Tri-City Medical Center | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory L. Hirsch is one of 1,339 pulmonologists in California
Pulmonary disease is Dr. Hirsch's primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Dr. Hirsch is licensed in California.
Specialties and state licenses
- Pulmonary disease, CaliforniaPrimary
Pulmonologists near Dr. Hirsch
Counts of pulmonologists 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 L. Hirsch billed Medicare for 12 services in 2023
CMS data shows 12 Medicare services from Dr. Hirsch across 1 procedure code in 2023, all of them office visits. Medicare paid $1,485 for them. Every service was in an office.
Dr. Hirsch's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 552023: 1278%
Dr. Hirsch compared with the California median for pulmonologists, 2023
- Dr. Hirsch
- California median
- Medicare services
- 12vs 64998% below
- Part D claims
- 208vs 42151% below
Medians across 1,263 pulmonologists in California with Dmand AI profiles that report each measure.
Dr. Hirsch's most billed Medicare procedure codes, 2023
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. Hirsch and other pulmonologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory L. Hirsch's patients have a median age of 75
Across all payers, Dmand AI patient panel data puts Dr. Hirsch's median patient age at 75, with 49% women.
Dr. Hirsch's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women49%
- Men49%
Source: Dmand AI Patient Panel Data
Dr. Gregory L. Hirsch wrote 366 Medicare Part D claims in 2024
In 2024, Dr. Hirsch wrote 366 Medicare Part D claims for 106 patients. 51% of them were for generic drugs. CMS names the drug for 208 of them, across 8 drugs with 11 or more claims each, at $73,821 in total drug cost. In 2023, CMS named 124 claims across 6 drugs.
Dr. Hirsch's Part D claims by kind of drug, 2024
- Generic185 claims51%
- Brand-name and other181 claims49%
Dr. Hirsch'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. Hirsch's Part D claims, 2024
- Antibiotics15%55 of 366 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: 1242024: 20868%
Drugs named by CMS: 8 in 2024, 6 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
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Dr. Gregory L. Hirsch received $3,805 in industry payments from 2016 to 2024
CMS Open Payments shows 200 general payments to Dr. Hirsch from 27 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Boehringer Ingelheim Pharmaceuticals, Inc. paid the most, $804.
General payments to Dr. Hirsch by program year, 2016 to 2024
General payments to Dr. Hirsch by kind, 2016 to 2024
- Food and beverage$3,793100%
- Education$120%
Companies that paid Dr. Hirsch the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Gregory L. Hirsch'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 Data |
| 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) |
| 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. Hirsch
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. Hirsch's NPI number?
Dr. Gregory L. Hirsch's NPI number is 1639287071. It was assigned on August 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory L. Hirsch?
Dr. Gregory L. Hirsch is a pulmonologist in Oceanside, California. The primary specialty in the NPI Registry is Pulmonary Disease Physician (taxonomy code 207RP1001X).
Where does Dr. Gregory L. Hirsch practice?
Dr. Hirsch practices at 4002 Vista Way, Oceanside, CA 92056. Dr. Hirsch's primary practice is Sharp Tri-City Medical Center in Oceanside, California, part of Sharp HealthCare. Dmand AI also links Dr. Hirsch to 2 medical groups and 1 group practice or clinic.
What is Dr. Gregory L. Hirsch's office phone number?
The practice phone on file for Dr. Hirsch is (760) 724-8411.
What is Dr. Gregory L. Hirsch's medical license number?
Dr. Hirsch holds California license G40467.
Which hospitals is Dr. Gregory L. Hirsch affiliated with?
Dr. Hirsch practices at Sharp Tri-City Medical Center in Oceanside, California.
What medical group is Dr. Gregory L. Hirsch part of?
Dr. Hirsch is linked to Hilo Benioff Medical Center. Dmand AI links Dr. Hirsch to 2 more medical groups.
Does Dr. Gregory L. Hirsch accept Medicare?
Yes. CMS data shows Dr. Hirsch billed Medicare for 12 services in 2023.
What services does Dr. Gregory L. Hirsch bill to Medicare?
In 2023, Dr. Hirsch's most billed Medicare services were office visit, new patient (99204).
What drugs does Dr. Gregory L. Hirsch prescribe most?
In 2024 Medicare Part D data, Dr. Hirsch's most prescribed drugs by claims were Trelegy Ellipta, Prednisone and Roflumilast.
Has Dr. Gregory L. Hirsch received payments from drug or device companies?
CMS Open Payments shows $3,805 in general payments to Dr. Hirsch from 27 companies from 2016 to 2024. The largest total came from Boehringer Ingelheim Pharmaceuticals, Inc.
How long has Dr. Gregory L. Hirsch been practicing?
Dr. Hirsch graduated from medical school in 1978, 48 years ago.
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