Dr. Gregory J. Baker, DO
- Medicare services, 2024
- 483
- Medicare patients, 2024
- 473
- Hospital affiliations
- 3
- Industry payments
- $239
- Medical groups
- 4
- Practice address
- 6200 North La Cholla Boulevard, Tucson, AZ 85741
- Practice phone
- Call (520) 469-8100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Baker's professional email, personal email and mobile number
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Dr. Gregory J. Baker is a neurologist in Tucson, Arizona
Dr. Baker practices at Northwest Medical Center in Tucson, Arizona, part of Community Health Systems.
Dr. Baker's NPI, 1497775522, was assigned on July 20, 2006. Dr. Baker graduated from Michigan State University College of Osteopathic Medicine in 2000. Dr. Baker holds Nevada license DO1473.
- NPI
- 1497775522NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0143320531
- NPI enumeration date
- July 20, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (520) 469-8100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gregory J. Baker practices at Northwest Medical Center in Tucson, Arizona
Dr. Baker's primary practice is Northwest Medical Center, at 6200 North La Cholla Boulevard, Tucson, AZ 85741 in Pima County. The practice phone is (520) 469-8100.
- Northwest Medical Center6200 North La Cholla Boulevard, Tucson, AZ 85741 · Pima CountyPhone(520) 469-8100
Source: Dmand AI Affiliation Data
Dr. Gregory J. Baker is affiliated with 3 sites of care and 4 medical groups
Dr. Baker's primary practice is Northwest Medical Center in Tucson, Arizona, part of Community Health Systems. Dr. Baker is also affiliated with Spring Valley Hospital Medical Center. The medical group on file is NuView Medical Group. Dmand AI also links Dr. Baker to 1 more hospital and 3 medical groups, 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 J. Baker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Baker practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwest Medical Center | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gregory J. Baker is one of 395 neurologists in Arizona
Neurology is Dr. Baker's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dmand AI has Dr. Baker's licenses on file in 2 states: Nevada and Florida.
Specialties and state licenses
- Neurology, NevadaPrimary
- Florida license
Neurologists near Dr. Baker
Counts of neurologists 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 J. Baker billed Medicare for 483 services in 2024
CMS data shows 483 Medicare services from Dr. Baker across 4 procedure codes in 2024, for 473 Medicare patients. Medicare paid $44,231 for them.
Dr. Baker's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 1722024: 438155%
- Tests and treatments
- 2023: 652024: 4531%
- Office and hospital visits
- 2023: 622024: 0100%
Where Dr. Baker's Medicare services took place, 2024
- In an office43891%
- In a facility459%
Dr. Baker compared with the Arizona median for neurologists, 2024
- Dr. Baker
- Arizona median
- Medicare services
- 483vs 5126% below
- Medicare patients
- 473vs 27274% above
Medians across 365 neurologists in Arizona with Dmand AI profiles that report each measure.
Dr. Baker'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. Baker and other neurologists in Arizona.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gregory J. Baker treated 473 Medicare patients in 2024, average age 76
CMS counts 473 Medicare patients who saw Dr. Baker in 2024. The largest group is 75 to 84, with 194 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 17% are also on Medicaid. Their average risk score is 1.69, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Baker's median patient age at 73, with 57% women.
Dr. Baker's Medicare patients by age, 2024
Dr. Baker's Medicare patients by sex, 2024
- Women23850%
- Men23550%
Chronic conditions among Dr. Baker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Stroke or TIA71%
- Arthritis53%
- Diabetes43%
- Ischemic heart disease41%
- Chronic kidney disease40%
- Anxiety39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Baker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gregory J. Baker offers telehealth to Medicare patients
Dr. Baker accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Baker as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Gregory J. Baker received $239 in industry payments from 2016 to 2018
CMS Open Payments shows 12 general payments to Dr. Baker from 5 drug and device companies from 2016 to 2018. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $62.
General payments to Dr. Baker by program year, 2016 to 2018
Companies that paid Dr. Baker the most, 2016 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gregory J. Baker graduated from Michigan State University College of Osteopathic Medicine
Dr. Baker graduated from Michigan State University College of Osteopathic Medicine in 2000.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gregory J. Baker'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 DataMedicare Physician & Other Practitioners - 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 J. Baker
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 J. Baker's NPI number?
Dr. Gregory J. Baker's NPI number is 1497775522. It was assigned on July 20, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gregory J. Baker?
Dr. Gregory J. Baker is a neurologist in Tucson, Arizona. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Gregory J. Baker practice?
Dr. Baker practices at 6200 North La Cholla Boulevard, Tucson, AZ 85741. Dr. Baker's primary practice is Northwest Medical Center in Tucson, Arizona, part of Community Health Systems. Dmand AI also links Dr. Baker to 1 hospital and 3 medical groups.
What is Dr. Gregory J. Baker's office phone number?
The practice phone on file for Dr. Baker is (520) 469-8100.
What is Dr. Gregory J. Baker's medical license number?
Dr. Baker holds Nevada license DO1473, one of the licenses on file in 2 states.
Which states has Dr. Gregory J. Baker been licensed in?
Dmand AI has state licenses on file for Dr. Baker in Nevada and Florida.
Which hospitals is Dr. Gregory J. Baker affiliated with?
Dr. Baker practices at Northwest Medical Center in Tucson, Arizona. Dr. Baker is also affiliated with Spring Valley Hospital Medical Center. Dmand AI links Dr. Baker to 1 more hospital.
What medical group is Dr. Gregory J. Baker part of?
Dr. Baker is linked to NuView Medical Group. Dmand AI links Dr. Baker to 3 more medical groups.
Does Dr. Gregory J. Baker accept Medicare?
Yes. CMS data shows Dr. Baker billed Medicare for 483 services in 2024, and Dr. Baker accepts Medicare assignment.
Does Dr. Gregory J. Baker offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Baker as offering telehealth services.
Show 5 more questionsShow fewer questions
How many Medicare patients does Dr. Gregory J. Baker see?
CMS counts 473 Medicare patients who saw Dr. Baker in 2024, with an average age of 76.
What services does Dr. Gregory J. Baker bill to Medicare?
In 2024, Dr. Baker's most billed Medicare services were medicare service (G0426), medicare service (G0425) and nerve and brain test (95816).
Where did Dr. Gregory J. Baker go to medical school?
Dr. Baker graduated from Michigan State University College of Osteopathic Medicine in 2000.
Has Dr. Gregory J. Baker received payments from drug or device companies?
CMS Open Payments shows $239 in general payments to Dr. Baker from 5 companies from 2016 to 2018. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Gregory J. Baker been practicing?
Dr. Baker graduated from medical school in 2000, 26 years ago.
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