Gregory S. Patterson Jr.
- Medicare services, 2023
- 372
- Medicare patients, 2024
- 12
- Part D claims, 2024
- 78
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 2020 E Riverside Dr, Austin, TX 78741
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Austin Emergency Center - HOPD
Acute Care Hospital outpatient department · Austin, Texas
Find Gregory Patterson's professional email, personal email and mobile number
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Gregory S. Patterson Jr. is an emergency medicine physician in Austin, Texas
Gregory Patterson practices at Austin Emergency Center - HOPD in Austin, Texas.
Gregory Patterson's NPI, 1821447251, was assigned on June 7, 2016. Gregory Patterson graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 2016. Gregory Patterson holds Texas license R5450.
- NPI
- 1821447251NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8628324522
- NPI enumeration date
- June 7, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Gregory S. Patterson Jr. practices at Austin Emergency Center - HOPD in Austin, Texas
Gregory Patterson's primary practice is Austin Emergency Center - HOPD, at 2020 E Riverside Dr, Austin, TX 78741.
- Austin Emergency Center - HOPD2020 E Riverside Dr, Austin, TX 78741
Source: Dmand AI Affiliation Data
Gregory S. Patterson Jr. is affiliated with 5 sites of care and 6 medical groups
Gregory Patterson's primary practice is Austin Emergency Center - HOPD in Austin, Texas. Gregory Patterson is also affiliated with St. David's Medical Center. The medical group on file is Emergency Service Partners, L.P. Dmand AI also links Gregory Patterson to 5 more medical groups and 3 group practices and clinics, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Gregory S. Patterson Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gregory Patterson practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Austin Emergency Center - HOPD | Available with a free account |
| +4 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Gregory S. Patterson Jr. is one of 4,831 emergency medicine physicians in Texas
Emergency medicine is Gregory Patterson's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Gregory Patterson is licensed in Texas.
Specialties and state licenses
- Emergency medicine, TexasPrimary
Emergency medicine physicians near Gregory Patterson
Counts of emergency medicine physicians 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
Gregory S. Patterson Jr. billed Medicare for 372 services in 2023
CMS data shows 372 Medicare services from Gregory Patterson across 5 procedure codes in 2023, for 12 Medicare patients. Medicare paid $33,390 for them. Every service was in a facility, such as a hospital, rather than an office.
Gregory Patterson's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 4062023: 26634%
- Tests and treatments
- 2022: 2842023: 10663%
Gregory Patterson compared with the Texas median for emergency medicine physicians, 2023
- Gregory Patterson
- Texas median
- Medicare services
- 372vs 22565% above
- Medicare patients
- 12vs 20694% below
- Part D claims
- 261vs 743.5 times
Medians across 4,588 emergency medicine physicians in Texas with Dmand AI profiles that report each measure.
Gregory Patterson'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 Gregory Patterson and other emergency medicine physicians in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Gregory S. Patterson Jr. treated 12 Medicare patients in 2024, average age 78
CMS counts 12 Medicare patients who saw Gregory Patterson in 2024. Their average risk score is 2.04, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Gregory Patterson's median patient age at 33, with 50% women.
Gregory Patterson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 33
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Gregory S. Patterson Jr. wrote 78 Medicare Part D claims in 2024
In 2024, Gregory Patterson wrote 78 Medicare Part D claims for 32 patients. 92% of them were for generic drugs. They cover 11 drugs, with $1,581 in total drug cost. In 2022, CMS named 247 claims across 11 drugs.
Gregory Patterson's Part D claims by kind of drug, 2024
- Generic72 claims92%
- Brand-name and other6 claims8%
Gregory Patterson's most prescribed drugs by claims, 2023
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 Gregory Patterson's Part D claims, 2024
- Antibiotics21%16 of 78 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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 2472023: 2616%
Drugs named by CMS: 11 in 2023, 11 in 2022.
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 Gregory S. Patterson Jr. takes part in Medicare
Gregory Patterson 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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Gregory S. Patterson Jr. has 1 publication on record
Dmand AI links 1 paper to Gregory Patterson in 2018. Gregory Patterson's most frequent co-authors are James M. Kempema, MD and Orlando Magallanes, MD.
Gregory Patterson's most frequent co-authors
Recent publications by Gregory Patterson
See who Gregory Patterson researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Gregory Patterson works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Gregory S. Patterson Jr. received $22 in industry payments in 2025
CMS Open Payments shows 1 general payment to Gregory Patterson from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Galderma Laboratories, L.P. paid the most, $22.
Companies that paid Gregory Patterson the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Gregory S. Patterson Jr. graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville
Gregory Patterson graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Gregory S. Patterson Jr.'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) |
| 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 |
| 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 Gregory S. Patterson Jr.
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Gregory S. Patterson Jr.'s NPI number?
Gregory S. Patterson Jr.'s NPI number is 1821447251. It was assigned on June 7, 2016, and it is active in the NPI Registry.
What does Gregory S. Patterson Jr. specialize in?
Gregory S. Patterson Jr. is an emergency medicine physician in Austin, Texas. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Gregory S. Patterson Jr. practice?
Gregory Patterson practices at 2020 E Riverside Dr, Austin, TX 78741. Gregory Patterson's primary practice is Austin Emergency Center - HOPD in Austin, Texas. Dmand AI also links Gregory Patterson to 5 medical groups and 3 group practices and clinics.
What is Gregory S. Patterson Jr.'s medical license number?
Gregory Patterson holds Texas license R5450.
Which hospitals is Gregory S. Patterson Jr. affiliated with?
Gregory Patterson is affiliated with St. David's Medical Center.
What medical group is Gregory S. Patterson Jr. part of?
Gregory Patterson is linked to Emergency Service Partners, L.P. Dmand AI links Gregory Patterson to 5 more medical groups.
Does Gregory S. Patterson Jr. accept Medicare?
Yes. CMS data shows Gregory Patterson billed Medicare for 372 services in 2023, and Gregory Patterson accepts Medicare assignment.
How many Medicare patients does Gregory S. Patterson Jr. see?
CMS counts 12 Medicare patients who saw Gregory Patterson in 2024, with an average age of 78.
What services does Gregory S. Patterson Jr. bill to Medicare?
In 2023, Gregory Patterson's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and emergency department visit (99284).
Where did Gregory S. Patterson Jr. go to medical school?
Gregory Patterson graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 2016.
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What drugs does Gregory S. Patterson Jr. prescribe most?
In 2023 Medicare Part D data, Gregory Patterson's most prescribed drugs by claims were Cyclobenzaprine HCl, Meloxicam and Ondansetron HCl.
Has Gregory S. Patterson Jr. received payments from drug or device companies?
CMS Open Payments shows $22 in general payments to Gregory Patterson from 1 company from 2025 to 2025. The largest total came from Galderma Laboratories, L.P.
How long has Gregory S. Patterson Jr. been practicing?
Gregory Patterson graduated from medical school in 2016, 10 years ago.
Does Gregory S. Patterson Jr. do research?
Dmand AI links 1 publication to Gregory Patterson.
Who does Gregory S. Patterson Jr. publish with?
Gregory Patterson's most frequent co-authors are James M. Kempema, MD (1 shared paper) and Orlando Magallanes, MD (1 shared paper).
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