Gregg L. Mercier, PA-C
- Medicare services, 2024
- 631
- Medicare patients, 2024
- 371
- Part D claims, 2024
- 365
- Hospital affiliations
- 3
- Industry payments
- $16
- Practice address
- 800 W State Highway 71, Marble Falls, TX 78654
- Practice phone
- Call (254) 724-2111
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Baylor Scott & White Clinic - Temple
Marble Falls, Texas
Find Gregg Mercier'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.
Gregg L. Mercier is a physician assistant in Marble Falls, Texas
Gregg Mercier practices at Baylor Scott & White Clinic - Temple in Marble Falls, Texas.
Gregg Mercier's NPI, 1497737076, was assigned on November 18, 2005. Gregg Mercier holds Texas license PA03990.
- NPI
- 1497737076NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0648232124
- NPI enumeration date
- November 18, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (254) 724-2111
- 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 Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Gregg L. Mercier practices at Baylor Scott & White Clinic - Temple in Marble Falls, Texas
Gregg Mercier's primary practice is Baylor Scott & White Clinic - Temple, at 800 W State Highway 71, Marble Falls, TX 78654 in Burnet County. The practice phone is (254) 724-2111.
- Baylor Scott & White Clinic - Temple800 W State Highway 71, Marble Falls, TX 78654 · Burnet CountyPhone(254) 724-2111
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Gregg L. Mercier is affiliated with 6 sites of care and 3 medical groups
Gregg Mercier's primary practice is Baylor Scott & White Clinic - Temple in Marble Falls, Texas. Gregg Mercier is also affiliated with Baylor Scott & White Medical Center - Marble Falls. The medical group on file is Baylor Scott & White Temple Roney Bone and Joint Institute, Temple. Dmand AI also links Gregg Mercier to 2 more hospitals, 2 group practices and clinics and 2 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Gregg L. Mercier's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gregg Mercier practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Baylor Scott & White Clinic - Temple | Available with a free account |
| +5 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Gregg L. Mercier is one of 8,663 physician assistants in Texas
Physician assistant is Gregg Mercier's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Gregg Mercier is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Gregg Mercier is licensed in Texas.
Specialties and state licenses
- Physician assistant, TexasPrimary
Clinical focus
Dmand AI lists chronic obstructive pulmonary disease (COPD), hypersomnia, insomnia, shingles, sleep apnea and vaginal infection among the conditions Gregg Mercier treats.
Physician assistants near Gregg Mercier
Counts of physician assistants 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
Gregg L. Mercier billed Medicare for 631 services in 2024
CMS data shows 631 Medicare services from Gregg Mercier across 3 procedure codes in 2024, all of them office visits, for 371 Medicare patients. Medicare paid $35,150 for them. Every service was in a facility, such as a hospital, rather than an office.
Gregg Mercier compared with the Texas median for physician assistants, 2024
- Gregg Mercier
- Texas median
- Medicare services
- 631vs 2292.8 times
- Medicare patients
- 371vs 993.7 times
- Part D claims
- 288vs 296Close to median
Medians across 5,541 physician assistants in Texas with Dmand AI profiles that report each measure.
Gregg Mercier'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 Gregg Mercier and other physician assistants in Texas.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Gregg L. Mercier treated 371 Medicare patients in 2024, average age 74
CMS counts 371 Medicare patients who saw Gregg Mercier in 2024. The largest group is 65 to 74, with 196 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 3% are also on Medicaid. Their average risk score is 1.17, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Gregg Mercier's median patient age at 68, with 43% women.
Gregg Mercier's Medicare patients by age, 2024
Gregg Mercier's Medicare patients by sex, 2024
- Women18349%
- Men18851%
Chronic conditions among Gregg Mercier's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Ischemic heart disease35%
- Diabetes29%
- Mood disorders27%
- Chronic kidney disease25%
- Depression25%
Share of Medicare patients with each condition. A patient can have several.
Gregg Mercier'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
- Women43%
- Men56%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Gregg L. Mercier wrote 365 Medicare Part D claims in 2024
In 2024, Gregg Mercier wrote 365 Medicare Part D claims for 117 patients. 91% of them were for generic drugs. CMS names the drug for 288 of them, across 10 drugs with 11 or more claims each, at $18,978 in total drug cost.
Gregg Mercier's Part D claims by kind of drug, 2024
- Generic333 claims91%
- Brand-name32 claims9%
Gregg Mercier'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.
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
Gregg L. Mercier offers telehealth to Medicare patients
Gregg Mercier accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Gregg Mercier as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Gregg L. Mercier received $16 in industry payments in 2025
CMS Open Payments shows 1 general payment to Gregg Mercier from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $16.
Companies that paid Gregg Mercier the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Gregg L. Mercier is board certified in certified physician assistant
Gregg Mercier is a member of AAPA.
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Gregg L. Mercier'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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 Gregg L. Mercier
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Gregg L. Mercier's NPI number?
Gregg L. Mercier's NPI number is 1497737076. It was assigned on November 18, 2005, and it is active in the NPI Registry.
What does Gregg L. Mercier specialize in?
Gregg L. Mercier is a physician assistant in Marble Falls, Texas. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Gregg L. Mercier practice?
Gregg Mercier practices at 800 W State Highway 71, Marble Falls, TX 78654. Gregg Mercier's primary practice is Baylor Scott & White Clinic - Temple in Marble Falls, Texas. Dmand AI also links Gregg Mercier to 2 hospitals, 2 group practices and clinics and 2 medical groups.
What is Gregg L. Mercier's office phone number?
The practice phone on file for Gregg Mercier is (254) 724-2111.
What is Gregg L. Mercier's medical license number?
Gregg Mercier holds Texas license PA03990.
Which hospitals is Gregg L. Mercier affiliated with?
Gregg Mercier is affiliated with Baylor Scott & White Medical Center - Marble Falls. Dmand AI links Gregg Mercier to 2 more hospitals.
What medical group is Gregg L. Mercier part of?
Gregg Mercier is linked to Baylor Scott & White Temple Roney Bone and Joint Institute, Temple. Dmand AI links Gregg Mercier to 2 more medical groups.
Does Gregg L. Mercier accept Medicare?
Yes. CMS data shows Gregg Mercier billed Medicare for 631 services in 2024, and Gregg Mercier accepts Medicare assignment.
Does Gregg L. Mercier offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Gregg Mercier as offering telehealth services.
How many Medicare patients does Gregg L. Mercier see?
CMS counts 371 Medicare patients who saw Gregg Mercier in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
Is Gregg L. Mercier board certified?
Yes. Gregg Mercier is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
What services does Gregg L. Mercier bill to Medicare?
In 2024, Gregg Mercier's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and office visit, new patient (99203).
What drugs does Gregg L. Mercier prescribe most?
In 2024 Medicare Part D data, Gregg Mercier's most prescribed drugs by claims were Eszopiclone, Montelukast Sodium and Azelastine HCl.
Has Gregg L. Mercier received payments from drug or device companies?
CMS Open Payments shows $16 in general payments to Gregg Mercier from 1 company from 2025 to 2025. The largest total came from GlaxoSmithKline, LLC.
How long has Gregg L. Mercier been practicing?
Gregg Mercier graduated from medical school in 2000, 26 years ago.
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