Dr. Gregory George Olmsted, MD
- Medicare services, 2024
- 247
- Medicare patients, 2024
- 198
- Part D claims, 2024
- 319
- Hospital affiliations
- 1
- Industry payments
- $109
- Practice address
- 2977 E Germann Rd, Chandler, AZ 85286
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Dignity Health Arizona General Hosp - Emergency Room - Chandler German - HOPD
Acute Care Hospital outpatient department · Chandler, Arizona
Find Dr. Olmsted'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 George Olmsted is an emergency medicine physician in Chandler, Arizona
Dr. Olmsted practices at Dignity Health Arizona General Hosp - Emergency Room - Chandler German - HOPD in Chandler, Arizona.
Dr. Olmsted's NPI, 1245597210, was assigned on April 16, 2012. Dr. Olmsted graduated from Rush Medical College of Rush University in 2012. Dr. Olmsted holds Illinois license 036.137398.
- NPI
- 1245597210NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7113248949
- NPI enumeration date
- April 16, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory George Olmsted practices at Dignity Health Arizona General Hosp - Emergency Room - Chandler German - HOPD in Chandler, Arizona
Dr. Olmsted's primary practice is Dignity Health Arizona General Hosp - Emergency Room - Chandler German - HOPD, at 2977 E Germann Rd, Chandler, AZ 85286.
- Dignity Health Arizona General Hosp - Emergency Room - Chandler German - HOPD2977 E Germann Rd, Chandler, AZ 85286
Source: Dmand AI Affiliation Data
Dr. Gregory George Olmsted is affiliated with 5 sites of care and 4 medical groups
Dr. Olmsted's primary practice is Dignity Health Arizona General Hosp - Emergency Room - Chandler German - HOPD in Chandler, Arizona. Dr. Olmsted is also affiliated with Dignity Health - Arizona General Hospital Mesa. The medical group on file is TEC Emergency Physicians of Arizona. Dmand AI also links Dr. Olmsted to 3 more group practices and clinics and 3 medical groups, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gregory George Olmsted's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Olmsted practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dignity Health Arizona General Hosp - Emergency Room - Chandler German - HOPD | Available with a free account |
| +4 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory George Olmsted is one of 1,360 emergency medicine physicians in Arizona
Emergency medicine is Dr. Olmsted's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Olmsted is licensed in Illinois.
Specialties and state licenses
- Emergency medicine, IllinoisPrimary
Emergency medicine physicians near Dr. Olmsted
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
Dr. Gregory George Olmsted billed Medicare for 247 services in 2024
CMS data shows 247 Medicare services from Dr. Olmsted across 4 procedure codes in 2024, for 198 Medicare patients. Medicare paid $21,078 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Olmsted's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2302024: 2137%
- Tests and treatments
- 2023: 532024: 3436%
Dr. Olmsted compared with the Arizona median for emergency medicine physicians, 2024
- Dr. Olmsted
- Arizona median
- Medicare services
- 247vs 21614% above
- Medicare patients
- 198vs 2106% below
- Part D claims
- 207vs 504.1 times
Medians across 1,326 emergency medicine physicians in Arizona with Dmand AI profiles that report each measure.
Dr. Olmsted'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. Olmsted and other emergency medicine physicians in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory George Olmsted treated 198 Medicare patients in 2024, average age 77
CMS counts 198 Medicare patients who saw Dr. Olmsted in 2024. The largest group is 75 to 84, with 88 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 9% are also on Medicaid. Their average risk score is 1.37, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Olmsted's median patient age at 49, with 58% women.
Dr. Olmsted's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Olmsted's Medicare patients by sex, 2024
- Women12563%
- Men7337%
Chronic conditions among Dr. Olmsted's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis66%
- Ischemic heart disease35%
- Anxiety33%
- Chronic kidney disease32%
- Mood disorders30%
- Depression28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Olmsted's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 49
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory George Olmsted wrote 319 Medicare Part D claims in 2024
In 2024, Dr. Olmsted wrote 319 Medicare Part D claims for 186 patients. 93% of them were for generic drugs. CMS names the drug for 207 of them, across 10 drugs with 11 or more claims each, at $2,051 in total drug cost. In 2023, CMS named 200 claims across 8 drugs.
Dr. Olmsted's Part D claims by kind of drug, 2024
- Generic297 claims93%
- Brand-name and other22 claims7%
Dr. Olmsted'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. Olmsted's Part D claims, 2024
- Opioids14%44 of 319 claims
- Antibiotics35%113 of 319 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: 2002024: 2074%
Drugs named by CMS: 10 in 2024, 8 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 George Olmsted takes part in Medicare
Dr. Olmsted 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 George Olmsted received $109 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Olmsted from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $109.
Companies that paid Dr. Olmsted the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory George Olmsted graduated from Rush Medical College of Rush University
Dr. Olmsted graduated from Rush Medical College of Rush University in 2012.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory George Olmsted'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) |
| 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 Dr. Gregory George Olmsted
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 George Olmsted's NPI number?
Dr. Gregory George Olmsted's NPI number is 1245597210. It was assigned on April 16, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory George Olmsted?
Dr. Gregory George Olmsted is an emergency medicine physician in Chandler, Arizona. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Gregory George Olmsted practice?
Dr. Olmsted practices at 2977 E Germann Rd, Chandler, AZ 85286. Dr. Olmsted's primary practice is Dignity Health Arizona General Hosp - Emergency Room - Chandler German - HOPD in Chandler, Arizona. Dmand AI also links Dr. Olmsted to 3 group practices and clinics and 3 medical groups.
What is Dr. Gregory George Olmsted's medical license number?
Dr. Olmsted holds Illinois license 036.137398.
Which hospitals is Dr. Gregory George Olmsted affiliated with?
Dr. Olmsted is affiliated with Dignity Health - Arizona General Hospital Mesa.
What medical group is Dr. Gregory George Olmsted part of?
Dr. Olmsted is linked to TEC Emergency Physicians of Arizona. Dmand AI links Dr. Olmsted to 3 more medical groups.
Does Dr. Gregory George Olmsted accept Medicare?
Yes. CMS data shows Dr. Olmsted billed Medicare for 247 services in 2024, and Dr. Olmsted accepts Medicare assignment.
How many Medicare patients does Dr. Gregory George Olmsted see?
CMS counts 198 Medicare patients who saw Dr. Olmsted in 2024, with an average age of 77.
What services does Dr. Gregory George Olmsted bill to Medicare?
In 2024, Dr. Olmsted's most billed Medicare services were emergency department visit (99284), emergency department visit (99285) and heart test or procedure (93010).
Where did Dr. Gregory George Olmsted go to medical school?
Dr. Olmsted graduated from Rush Medical College of Rush University in 2012.
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What drugs does Dr. Gregory George Olmsted prescribe most?
In 2024 Medicare Part D data, Dr. Olmsted's most prescribed drugs by claims were Prednisone, Amoxicillin-Clavulanate Potass and Ondansetron ODT.
Has Dr. Gregory George Olmsted received payments from drug or device companies?
CMS Open Payments shows $109 in general payments to Dr. Olmsted from 1 company from 2017 to 2017. The largest total came from Allergan Inc.
How long has Dr. Gregory George Olmsted been practicing?
Dr. Olmsted graduated from medical school in 2012, 14 years ago.
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