Dr. M. Gray Napier, MD
- Medicare services, 2024
- 32
- Medicare patients, 2024
- 42
- Hospital affiliations
- 1
- Medical groups
- 3
- State license
- 1
- Practice address
- 1202 S Tyler Street, Covington, LA 70433
- Practice phone
- Call (985) 898-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Napier'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. M. Gray Napier is a nephrologist in Covington, Louisiana
Dr. Napier practices at St. Tammany Parish Hospital in Covington, Louisiana, part of St. Tammany Health System.
Dr. Napier's NPI, 1609841428, was assigned on February 23, 2006. Dr. Napier graduated from University of Mississippi School of Medicine in 1997. Dr. Napier holds Louisiana license 200812.
- NPI
- 1609841428NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8527071729
- NPI enumeration date
- February 23, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (985) 898-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. M. Gray Napier practices at St. Tammany Parish Hospital in Covington, Louisiana
Dr. Napier's primary practice is St. Tammany Parish Hospital, at 1202 S Tyler Street, Covington, LA 70433 in St. Tammany Parish. The practice phone is (985) 898-4000.
- St. Tammany Parish Hospital1202 S Tyler Street, Covington, LA 70433 · St. Tammany ParishPhone(985) 898-4000
Source: Dmand AI Affiliation Data
Dr. M. Gray Napier is affiliated with 2 sites of care and 3 medical groups
Dr. Napier's primary practice is St. Tammany Parish Hospital in Covington, Louisiana, part of St. Tammany Health System. The medical group on file is Ochsner Health. Dmand AI also links Dr. Napier to 2 more medical groups and 1 clinical lab, each named with a free account. Dr. Napier's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. M. Gray Napier's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Napier practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Tammany Parish Hospital | Available with a free account |
| +1 more site and 2 medical groups | 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. Tammany Health System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. M. Gray Napier is one of 196 nephrologists in Louisiana
Nephrology is Dr. Napier's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Napier is licensed in Louisiana.
Specialties and state licenses
- Nephrology, LouisianaPrimary
Nephrologists near Dr. Napier
Counts of nephrologists 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. M. Gray Napier billed Medicare for 32 services in 2024
CMS data shows 32 Medicare services from Dr. Napier across 1 procedure code in 2024, for 42 Medicare patients. Medicare paid $4,151 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Napier's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1052024: 3270%
Dr. Napier compared with the Louisiana median for nephrologists, 2024
- Dr. Napier
- Louisiana median
- Medicare services
- 32vs 61695% below
- Medicare patients
- 42vs 21280% below
Medians across 192 nephrologists in Louisiana with Dmand AI profiles that report each measure.
Dr. Napier'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. Napier?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Napier and other nephrologists in Louisiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. M. Gray Napier treated 42 Medicare patients in 2024, average age 76
CMS counts 42 Medicare patients who saw Dr. Napier in 2024. The largest group is 65 to 74, with 14 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 2.61, 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. Napier's median patient age at 68, with 55% women.
Dr. Napier's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Napier's Medicare patients by sex, 2024
- Women2252%
- Men2048%
Chronic conditions among Dr. Napier's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis67%
- Ischemic heart disease60%
- Heart failure50%
- Chronic kidney disease48%
- Anxiety45%
- Depression45%
Share of Medicare patients with each condition. A patient can have several.
Dr. Napier's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women55%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. M. Gray Napier takes part in Medicare
Dr. Napier 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. M. Gray Napier graduated from University of Mississippi School of Medicine
Dr. Napier graduated from University of Mississippi School of Medicine in 1997.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. M. Gray Napier'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) |
| 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. M. Gray Napier
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. M. Gray Napier's NPI number?
Dr. M. Gray Napier's NPI number is 1609841428. It was assigned on February 23, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. M. Gray Napier?
Dr. M. Gray Napier is a nephrologist in Covington, Louisiana. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. M. Gray Napier practice?
Dr. Napier practices at 1202 S Tyler Street, Covington, LA 70433. Dr. Napier's primary practice is St. Tammany Parish Hospital in Covington, Louisiana, part of St. Tammany Health System. Dmand AI also links Dr. Napier to 2 medical groups and 1 clinical lab.
What is Dr. M. Gray Napier's office phone number?
The practice phone on file for Dr. Napier is (985) 898-4000.
What is Dr. M. Gray Napier's medical license number?
Dr. Napier holds Louisiana license 200812.
Which hospitals is Dr. M. Gray Napier affiliated with?
Dr. Napier practices at St. Tammany Parish Hospital in Covington, Louisiana.
What medical group is Dr. M. Gray Napier part of?
Dr. Napier is linked to Ochsner Health. Dmand AI links Dr. Napier to 2 more medical groups.
Does Dr. M. Gray Napier accept Medicare?
Yes. CMS data shows Dr. Napier billed Medicare for 32 services in 2024, and Dr. Napier accepts Medicare assignment.
How many Medicare patients does Dr. M. Gray Napier see?
CMS counts 42 Medicare patients who saw Dr. Napier in 2024, with an average age of 76.
What services does Dr. M. Gray Napier bill to Medicare?
In 2024, Dr. Napier's most billed Medicare services were hospital inpatient care (99223).
Where did Dr. M. Gray Napier go to medical school?
Dr. Napier graduated from University of Mississippi School of Medicine in 1997.
How long has Dr. M. Gray Napier been practicing?
Dr. Napier graduated from medical school in 1997, 29 years ago.
Selling to nephrology practices?
See nephrologists in Louisiana by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card