Dr. Marshall Garrett, MD
- Medicare services, 2022
- 28
- Industry payments
- $2,616
- Affiliated sites
- 1
- Medical group
- 1
- Insurance carriers
- 15
- Practice address
- 10655 Steepletop Dr, Houston, TX 77065-4222
- Practice phone
- Call (281) 580-9030
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Francis X. Keller
Surgical practice · Houston, Texas
Find Dr. Garrett'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. Marshall Garrett is an anesthesiologist in Houston, Texas
Dr. Garrett practices at Francis X. Keller in Houston, Texas.
Dr. Garrett's NPI, 1578500740, was assigned on May 31, 2006. Dr. Garrett graduated from Creighton University School of Medicine - Omaha in 1978. Dr. Garrett holds Texas license H7148.
- NPI
- 1578500740NPI Registry (opens in a new tab)
- NPI enumeration date
- May 31, 2006
- NPI status
- Active
- Practice phone
- (281) 580-9030
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marshall Garrett practices at 2 locations in Houston, Texas
Dr. Garrett's primary practice is Francis X. Keller, at 10655 Steepletop Dr, Houston, TX 77065-4222. The practice phone is (281) 580-9030. The NPI Registry lists Dr. Garrett's practice address as 9180 Katy Fwy, Houston, TX 77055.
- Francis X. KellerPrimary10655 Steepletop Dr, Houston, TX 77065-4222Phone(281) 580-9030
- NPI Registry address9180 Katy Fwy, Houston, TX 77055 · Harris CountyPhone(281) 580-9030
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Marshall Garrett is affiliated with 1 site of care and 1 medical group
Dr. Garrett's primary practice is Francis X. Keller in Houston, Texas. Dmand AI also links Dr. Garrett to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Marshall Garrett's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Garrett practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Francis X. Keller | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marshall Garrett is one of 4,073 anesthesiologists in Texas
Anesthesiology is Dr. Garrett's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Garrett is board certified in anesthesiology by the American Board of Anesthesiology. Dmand AI has Dr. Garrett's licenses on file in 5 states: Texas, California, Oklahoma, Florida and Pennsylvania.
Specialties and state licenses
- Anesthesiology, TexasPrimary
- California license
- Oklahoma license
- Florida license
- Pennsylvania license
Anesthesiologists near Dr. Garrett
Counts of anesthesiologists 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. Marshall Garrett billed Medicare for 28 services in 2022
CMS data shows 28 Medicare services from Dr. Garrett across 1 procedure code in 2022. Medicare paid $1,205 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Garrett's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Anesthesia
- 2021: 172022: 2865%
Dr. Garrett compared with the Texas median for anesthesiologists, 2022
- Dr. Garrett
- Texas median
- Medicare services
- 28vs 7161% below
Medians across 3,710 anesthesiologists in Texas with Dmand AI profiles that report each measure.
Dr. Garrett's most billed Medicare procedure codes, 2022
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. Garrett and other anesthesiologists in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
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Dr. Marshall Garrett received $2,616 in industry payments from 2019 to 2020
CMS Open Payments shows 14 general payments to Dr. Garrett from 1 drug or device company from 2019 to 2020. Honoraria make up the largest share, 57% of the total. AcelRx Pharmaceuticals, Inc. paid the most, $2,616.
General payments to Dr. Garrett by program year, 2019 to 2020
General payments to Dr. Garrett by kind, 2019 to 2020
- Honoraria$1,50057%
- Consulting fees$90034%
- Food and beverage$2068%
- Education$100%
Companies that paid Dr. Garrett the most, 2019 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marshall Garrett graduated from Creighton University School of Medicine - Omaha
Dr. Garrett graduated from Creighton University School of Medicine - Omaha in 1978.
- Medical school
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Dr. Marshall Garrett accepts plans from 15 insurance carriers
Dr. Garrett is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- +7 more carriersWith a free account
Plan types Dr. Garrett accepts, by number of carriers
- PPO10
- HMO9
- Medicare5
- POS4
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Marshall Garrett'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 |
| 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. Marshall Garrett
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. Marshall Garrett's NPI number?
Dr. Marshall Garrett's NPI number is 1578500740. It was assigned on May 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Marshall Garrett?
Dr. Marshall Garrett is an anesthesiologist in Houston, Texas. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Marshall Garrett practice?
Dr. Garrett practices at 10655 Steepletop Dr, Houston, TX 77065-4222. Dr. Garrett also practices at 9180 Katy Fwy, Houston, TX 77055. Dr. Garrett's primary practice is Francis X. Keller in Houston, Texas. Dmand AI also links Dr. Garrett to 1 medical group.
What is Dr. Marshall Garrett's office phone number?
The practice phone on file for Dr. Garrett is (281) 580-9030.
What is Dr. Marshall Garrett's medical license number?
Dr. Garrett holds Texas license H7148, one of the licenses on file in 5 states.
Which states has Dr. Marshall Garrett been licensed in?
Dmand AI has state licenses on file for Dr. Garrett in Texas (1990 to 2026), California (since 1981), Oklahoma (1986 to 2014), Florida (1983 to 1996) and Pennsylvania (1985 to 1990).
Does Dr. Marshall Garrett accept Medicare?
Yes. CMS data shows Dr. Garrett billed Medicare for 28 services in 2022.
Is Dr. Marshall Garrett board certified?
Yes. Dr. Garrett is board certified in anesthesiology by the American Board of Anesthesiology.
What services does Dr. Marshall Garrett bill to Medicare?
In 2022, Dr. Garrett's most billed Medicare services were anesthesia (01938).
Where did Dr. Marshall Garrett go to medical school?
Dr. Garrett graduated from Creighton University School of Medicine - Omaha in 1978.
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Has Dr. Marshall Garrett received payments from drug or device companies?
CMS Open Payments shows $2,616 in general payments to Dr. Garrett from 1 company from 2019 to 2020. The largest total came from AcelRx Pharmaceuticals, Inc.
How long has Dr. Marshall Garrett been practicing?
Dr. Garrett graduated from medical school in 1978, 48 years ago.
What insurance does Dr. Marshall Garrett accept?
Dr. Garrett is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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