Dr. Gary D. Gray, MD
- Medicare services, 2024
- 689
- Medicare patients, 2024
- 280
- Part D claims, 2024
- 13,351
- Hospital affiliations
- 4
- Industry payments
- $429
- Practice address
- 232 S Woods Mill Rd, Chesterfield, MO 63017
- Practice phone
- Call (314) 434-1500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Gray's professional email, personal email and mobile number
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Dr. Gary D. Gray is an internist in Chesterfield, Missouri
Dr. Gray practices at St. Luke's Hospital in Chesterfield, Missouri, part of St. Luke's Episcopal-Presbyterian Hospital.
Dr. Gray's NPI, 1497729826, was assigned on February 14, 2006. Dr. Gray graduated from Saint Louis University School of Medicine in 1999. Dr. Gray holds Missouri license 2001028980.
- NPI
- 1497729826NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5294832390
- NPI enumeration date
- February 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (314) 434-1500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gary D. Gray practices at St. Luke's Hospital in Chesterfield, Missouri
Dr. Gray's primary practice is St. Luke's Hospital, at 232 S Woods Mill Rd, Chesterfield, MO 63017 in St. Louis County. The practice phone is (314) 434-1500.
- St. Luke's Hospital232 S Woods Mill Rd, Chesterfield, MO 63017 · St. Louis CountyPhone(314) 434-1500
Source: Dmand AI Affiliation Data
Dr. Gary D. Gray is affiliated with 9 sites of care and 1 medical group
Dr. Gray's primary practice is St. Luke's Hospital in Chesterfield, Missouri, part of St. Luke's Episcopal-Presbyterian Hospital. Dr. Gray is also affiliated with Mercy Hospital St. Louis. The medical group on file is St. Luke's Internal Medicine - WingHaven. Dmand AI also links Dr. Gray to 2 more hospitals, 3 home health agencies, 1 breast imaging center and 1 group practice or clinic, 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. Gary D. Gray's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gray practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Luke's Hospital | Available with a free account |
| +8 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across St. Luke's Episcopal-Presbyterian Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Gary D. Gray is one of 2,114 internists in Missouri
Internal medicine is Dr. Gray's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Gray is licensed in Missouri.
Specialties and state licenses
- Internal medicine, MissouriPrimary
Internists near Dr. Gray
Counts of internists 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. Gary D. Gray billed Medicare for 689 services in 2024
CMS data shows 689 Medicare services from Dr. Gray across 9 procedure codes in 2024, for 280 Medicare patients. Medicare paid $64,847 for them. Every service was in an office.
Dr. Gray's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3442024: 3226%
- Other services
- 2023: 3272024: 3037%
- Tests and treatments
- 2023: 742024: 6414%
Dr. Gray compared with the Missouri median for internists, 2024
- Dr. Gray
- Missouri median
- Medicare services
- 689vs 53030% above
- Medicare patients
- 280vs 21133% above
- Part D claims
- 12,548vs 32538.6 times
Medians across 2,076 internists in Missouri with Dmand AI profiles that report each measure.
Dr. Gray'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. Gray and other internists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gary D. Gray treated 280 Medicare patients in 2024, average age 75
CMS counts 280 Medicare patients who saw Dr. Gray in 2024. The largest group is 65 to 74, with 133 patients. 75% of them have high cholesterol, and 71% have high blood pressure. Their average risk score is 1.10, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Gray's median patient age at 71, with 45% women.
Dr. Gray's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Gray's Medicare patients by sex, 2024
- Women13046%
- Men15054%
Chronic conditions among Dr. Gray's Medicare patients, 2024
- High cholesterol75%
- High blood pressure71%
- Arthritis42%
- Ischemic heart disease28%
- Diabetes27%
- Chronic kidney disease26%
- Depression23%
- Mood disorders23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gray's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women45%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gary D. Gray wrote 13,351 Medicare Part D claims in 2024
In 2024, Dr. Gray wrote 13,351 Medicare Part D claims for 864 patients. 88% of them were for generic drugs. CMS names the drug for 12,548 of them, across 170 drugs with 11 or more claims each, at $892,331 in total drug cost. In 2023, CMS named 12,159 claims across 168 drugs.
Dr. Gray's Part D claims by kind of drug, 2024
- Generic11,785 claims88%
- Brand-name1,497 claims11%
- Other69 claims1%
Dr. Gray'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. Gray's Part D claims, 2024
- Opioids3%348 of 13,351 claims
- Antibiotics4%600 of 13,351 claims
- Antipsychotics, patients 65 and over1%76 of 13,351 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: 12,1592024: 12,5483%
Drugs named by CMS: 170 in 2024, 168 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. Gary D. Gray takes part in Medicare
Dr. Gray 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. Gary D. Gray received $429 in industry payments from 2016 to 2025
CMS Open Payments shows 24 general payments to Dr. Gray from 12 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 84% of the total. Novo Nordisk Inc paid the most, $103.
General payments to Dr. Gray by program year, 2016 to 2025
General payments to Dr. Gray by kind, 2016 to 2025
- Food and beverage$35884%
- Honoraria$5012%
- Education$205%
Companies that paid Dr. Gray 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. Gary D. Gray graduated from Saint Louis University School of Medicine
Dr. Gray graduated from Saint Louis University School of Medicine in 1999.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gary D. Gray'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) |
| 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. Gary D. Gray
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. Gary D. Gray's NPI number?
Dr. Gary D. Gray's NPI number is 1497729826. It was assigned on February 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gary D. Gray?
Dr. Gary D. Gray is an internist in Chesterfield, Missouri. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Gary D. Gray practice?
Dr. Gray practices at 232 S Woods Mill Rd, Chesterfield, MO 63017. Dr. Gray's primary practice is St. Luke's Hospital in Chesterfield, Missouri, part of St. Luke's Episcopal-Presbyterian Hospital. Dmand AI also links Dr. Gray to 2 hospitals, 3 home health agencies, 1 breast imaging center and 1 group practice or clinic.
What is Dr. Gary D. Gray's office phone number?
The practice phone on file for Dr. Gray is (314) 434-1500.
What is Dr. Gary D. Gray's medical license number?
Dr. Gray holds Missouri license 2001028980.
Which hospitals is Dr. Gary D. Gray affiliated with?
Dr. Gray practices at St. Luke's Hospital in Chesterfield, Missouri. Dr. Gray is also affiliated with Mercy Hospital St. Louis. Dmand AI links Dr. Gray to 2 more hospitals.
What medical group is Dr. Gary D. Gray part of?
Dr. Gray is linked to St. Luke's Internal Medicine - WingHaven.
Does Dr. Gary D. Gray accept Medicare?
Yes. CMS data shows Dr. Gray billed Medicare for 689 services in 2024, and Dr. Gray accepts Medicare assignment.
How many Medicare patients does Dr. Gary D. Gray see?
CMS counts 280 Medicare patients who saw Dr. Gray in 2024, with an average age of 75.
What services does Dr. Gary D. Gray bill to Medicare?
In 2024, Dr. Gray's most billed Medicare services were medicare service (G0439), office visit, established patient (99213) and office visit, established patient (99214).
Show 4 more questionsShow fewer questions
Where did Dr. Gary D. Gray go to medical school?
Dr. Gray graduated from Saint Louis University School of Medicine in 1999.
What drugs does Dr. Gary D. Gray prescribe most?
In 2024 Medicare Part D data, Dr. Gray's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Amlodipine Besylate.
Has Dr. Gary D. Gray received payments from drug or device companies?
CMS Open Payments shows $429 in general payments to Dr. Gray from 12 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Gary D. Gray been practicing?
Dr. Gray graduated from medical school in 1999, 27 years ago.
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