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Dr. William Marshall Guy, MD
NPI1073844957PAC ID9032439419
- Medicare services, 2024
- 11
- Medicare patients, 2024
- 12
- Part D claims, 2024
- 233
- Publications
- 3
- Hospital affiliations
- 1
- Practice address
- 1635 North Loop West, Houston, TX 77008
- Practice phone
- Call (713) 448-6796
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Guy's professional email, personal email and mobile number
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Dr. William Marshall Guy is a facial plastic surgery physician in Houston, Texas
Dr. Guy practices at Memorial Hermann Greater Heights Hospital in Houston, Texas, part of Memorial Hermann Health System.
Dr. Guy's NPI, 1073844957, was assigned on January 16, 2010. Dr. Guy graduated from Baylor College of Medicine in 2009. Dr. Guy holds Texas license P9864.
NPI and contact details
- NPI
- 1073844957NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9032439419
- NPI enumeration date
- January 16, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (713) 448-6796
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Marshall Guy practices at Memorial Hermann Greater Heights Hospital in Houston, Texas
Dr. Guy's primary practice is Memorial Hermann Greater Heights Hospital, at 1635 North Loop West, Houston, TX 77008 in Harris County. The practice phone is (713) 448-6796.
- Memorial Hermann Greater Heights Hospital1635 North Loop West, Houston, TX 77008 · Harris CountyPhone(713) 448-6796
Source: Dmand AI Affiliation Data
Dr. William Marshall Guy is affiliated with 2 sites of care
Dr. Guy's primary practice is Memorial Hermann Greater Heights Hospital in Houston, Texas, part of Memorial Hermann Health System. Dmand AI also links Dr. Guy to 1 physician office, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Marshall Guy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Guy practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Memorial Hermann Greater Heights Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Memorial Hermann Health System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William Marshall Guy is one of 42 facial plastic surgery physicians in Texas
Facial plastic surgery is Dr. Guy's primary specialty in the NPI Registry, under taxonomy code 207YS0123X. Dmand AI has Dr. Guy's licenses on file in 2 states: Texas and Alabama.
Specialties and state licenses
- Facial plastic surgery, TexasPrimary
- Alabama license
Facial plastic surgery physicians near Dr. Guy
Counts of facial plastic surgery 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. William Marshall Guy billed Medicare for 11 services in 2024
CMS data shows 11 Medicare services from Dr. Guy across 1 procedure code in 2024, all of them office visits, for 12 Medicare patients. Medicare paid $857 for them. Every service was in an office.
Medicare services, 202411
Medicare patients12
Paid by Medicare$857
Procedure codes1
Dr. Guy's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 122024: 118%
Dr. Guy compared with the Texas median for facial plastic surgery physicians, 2024
- Dr. Guy
- Texas median
- Medicare services
- 11vs 7285% below
- Medicare patients
- 12vs 7484% below
- Part D claims
- 198vs 653.0 times
Medians across 34 facial plastic surgery physicians in Texas with Dmand AI profiles that report each measure.
Dr. Guy'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.
Need commercial claims for Dr. Guy?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Guy and other facial plastic surgery physicians in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Marshall Guy treated 12 Medicare patients in 2024, average age 74
CMS counts 12 Medicare patients who saw Dr. Guy in 2024. The largest group is 85 and over, with 0 patients. 75% of them have high cholesterol. Their average risk score is 0.78, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Guy's median patient age at 63, with 50% women.
Medicare patients, 202412
Average age74
Average risk score0.78
Dr. Guy's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Guy's Medicare patients, 2024
- High cholesterol75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Guy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Marshall Guy wrote 233 Medicare Part D claims in 2024
In 2024, Dr. Guy wrote 233 Medicare Part D claims for 56 patients. 100% of them were for generic drugs. CMS names the drug for 198 of them, across 6 drugs with 11 or more claims each, at $1,056 in total drug cost. In 2023, CMS named 181 claims across 6 drugs.
Part D claims, 2024233
Drugs named by CMS6
Total drug cost$1,056
Part D patients56
Dr. Guy'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. Guy's Part D claims, 2024
- Opioids20%47 of 233 claims
- Antibiotics27%62 of 233 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: 1812024: 1989%
Drugs named by CMS: 6 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
How Dr. William Marshall Guy takes part in Medicare
Dr. Guy 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. William Marshall Guy has 3 publications on record
Dmand AI links 3 papers to Dr. Guy. The most frequent topics are Endoscopy. Dr. Guy's most frequent co-authors are Anthony Brissett, MD, Eugene Landon Alford, MD and Daniela M. Burchhardt, MD.
Papers3
Topics Dr. Guy writes about most
- Endoscopy
Dr. Guy's most frequent co-authors
- Anthony Brissett, MD2 shared papers
- Eugene Landon Alford, MD1 shared paper
- Daniela M. Burchhardt, MD1 shared paper
Recent publications by Dr. Guy
Decompression, SurgicalEndoscopyGlucocorticoids
See who Dr. Guy researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Guy works with, so you can find a warm path to the right facial plastic surgery physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. William Marshall Guy received $3,363 in industry payments from 2016 to 2025
CMS Open Payments shows 87 general payments to Dr. Guy from 12 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 69% of the total. Organogenesis Inc. paid the most, $884.
General payments to Dr. Guy by program year, 2016 to 2025
General payments to Dr. Guy by kind, 2016 to 2025
$3.4Kin total
- Food and beverage$2,33569%
- Travel and lodging$83725%
- Gifts$1906%
- Speaker and faculty fees$10%
Companies that paid Dr. Guy the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William Marshall Guy graduated from Baylor College of Medicine
Dr. Guy graduated from Baylor College of Medicine in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Marshall Guy'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) |
| 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 Dr. William Marshall Guy
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. William Marshall Guy's NPI number?
Dr. William Marshall Guy's NPI number is 1073844957. It was assigned on January 16, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. William Marshall Guy?
Dr. William Marshall Guy is a facial plastic surgery physician in Houston, Texas. The primary specialty in the NPI Registry is Facial Plastic Surgery Physician (taxonomy code 207YS0123X).
Where does Dr. William Marshall Guy practice?
Dr. Guy practices at 1635 North Loop West, Houston, TX 77008. Dr. Guy's primary practice is Memorial Hermann Greater Heights Hospital in Houston, Texas, part of Memorial Hermann Health System. Dmand AI also links Dr. Guy to 1 physician office.
What is Dr. William Marshall Guy's office phone number?
The practice phone on file for Dr. Guy is (713) 448-6796.
What is Dr. William Marshall Guy's medical license number?
Dr. Guy holds Texas license P9864, one of the licenses on file in 2 states.
Which states has Dr. William Marshall Guy been licensed in?
Dmand AI has state licenses on file for Dr. Guy in Texas and Alabama.
Which hospitals is Dr. William Marshall Guy affiliated with?
Dr. Guy practices at Memorial Hermann Greater Heights Hospital in Houston, Texas.
Does Dr. William Marshall Guy accept Medicare?
Yes. CMS data shows Dr. Guy billed Medicare for 11 services in 2024, and Dr. Guy accepts Medicare assignment.
How many Medicare patients does Dr. William Marshall Guy see?
CMS counts 12 Medicare patients who saw Dr. Guy in 2024, with an average age of 74.
What services does Dr. William Marshall Guy bill to Medicare?
In 2024, Dr. Guy's most billed Medicare services were office visit, new patient (99203).
Show 6 more questionsShow fewer questions
Where did Dr. William Marshall Guy go to medical school?
Dr. Guy graduated from Baylor College of Medicine in 2009.
What drugs does Dr. William Marshall Guy prescribe most?
In 2024 Medicare Part D data, Dr. Guy's most prescribed drugs by claims were Cephalexin, Hydrocodone-Acetaminophen and Zolpidem Tartrate.
Has Dr. William Marshall Guy received payments from drug or device companies?
CMS Open Payments shows $3,363 in general payments to Dr. Guy from 12 companies from 2016 to 2025. The largest total came from Organogenesis Inc.
How long has Dr. William Marshall Guy been practicing?
Dr. Guy graduated from medical school in 2009, 17 years ago.
Does Dr. William Marshall Guy do research?
Dmand AI links 3 publications to Dr. Guy.
Who does Dr. William Marshall Guy publish with?
Dr. Guy's most frequent co-authors are Anthony Brissett, MD (2 shared papers), Eugene Landon Alford, MD (1 shared paper) and Daniela M. Burchhardt, MD (1 shared paper).
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