Gregg L. Mercier, PA-C

  • Marble Falls, TX
  • Physician assistant
NPI1497737076PAC ID0648232124
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
Social profiles

Primary practice

Baylor Scott & White Clinic - Temple

Marble Falls, Texas

See all 9 affiliations

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.

View contacts for free

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 and contact details
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 - Temple
    800 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.

See all 9 affiliations for Gregg Mercier

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.

EHR by site
SiteEHR vendor and product
Baylor Scott & White Clinic - TempleAvailable with a free account
+5 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every site where Gregg Mercier practices

Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.

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, TexasPrimaryLicense PA03990 · taxonomy 363A00000X

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.

Medicare services, 2024631
Medicare patients371
Paid by Medicare$35,150
Procedure codes3

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.

See all procedures by Gregg Mercier

Need commercial claims for Gregg Mercier?

Medicare shows one payer. Book a meeting to get commercial claims data for Gregg Mercier and other physician assistants in Texas.

Book a meeting

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.

Medicare patients, 2024371
Average age74
Average risk score1.17
Also on Medicaid3%

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

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis63%
  4. Ischemic heart disease35%
  5. Diabetes29%
  6. Mood disorders27%
  7. Chronic kidney disease25%
  8. 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.

Part D claims, 2024365
Drugs named by CMS10
Total drug cost$18,978
Part D patients117

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.

See all prescribing by Gregg Mercier

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)

For MedTech and pharma teams

Find physician assistants like Gregg Mercier by procedure volume and prescribing

Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.

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.

See all payments to Gregg Mercier

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.

  1. Board certified in certified physician assistantNational Commission on Certification of Physician Assistants (NCCPA)

Source: Dmand AI Professional Profile Data

Sources for Gregg L. Mercier's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand 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.

Selling to physician assistant practices?

See physician assistants in Texas 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

Cookie settings

Turn each category on or off. Your choice is kept for 12 months and you can change it here at any time.

Necessary

Always on. Sign-in, security, downloads you asked for, your cookie choice, and the page that led to a signup.

View cookies (6)
  • dm_consentDmand AI. Your cookie choices and whether your browser sent a Global Privacy Control signal. 12 months.
  • dm_ft, dm_ltDmand AI. The first and the latest page you arrived on, with the date, so a signup is credited to the page that worked. 90 days, 30 days.
  • dm_fs, dm_lsDmand AI. The first and the latest source of a visit (a search engine, a campaign or the site that linked here). 90 days, 30 days.
  • dm_dl, dm_dl_okDmand AI. After you give an email address for a download, lets you download files without being asked again. 30 days.
  • Session and CSRF cookiesDmand AI (app.dmand.ai). Sign-in and form protection in the application. Session.
  • __cf_bm, cf_clearanceCloudflare. Tells people from automated traffic and keeps the site available. 30 minutes; cf_clearance while a security check is valid.

Analytics

On unless you turn it off. How pages are used, in aggregate, and recordings of how pages are used.

View cookies (6)
  • Google Tag ManagerGoogle. Loads the analytics and marketing tags that are on. Sets no cookie of its own and does not load when both categories are off. n/a.
  • _ga, _ga_<container-id>Google Analytics 4. Visits and page views in aggregate on dmand.ai. 2 years.
  • _clck, _clskMicrosoft Clarity. Recordings and heatmaps of how pages are used, with form fields masked. 1 year, 1 day.
  • CLID, MUID, ANONCHK, MR, SMMicrosoft (clarity.ms). Set by Microsoft when Clarity loads, to recognize a browser across sites that use Clarity. Up to 1 year.
  • None (cookieless)Ahrefs Analytics. Page views in aggregate. n/a.
  • ph_<project>_posthogPostHog. Product usage, errors and performance in app.dmand.ai, used to fix bugs and improve features. 365 days.

Marketing

On unless you turn it off, and always off when your browser sends a Global Privacy Control signal. A visitor identification service tells our sales team which companies and people visit.

View cookies (6)
  • _reb2buid, _reb2butkRB2B. Recognizes a returning browser for visitor identification. 360 days, 1 year.
  • _reb2bgeoRB2B. The location used to decide whether a visit can be identified. 20 days.
  • _reb2brefRB2B. The page or site that referred the visit. 15 days.
  • _reb2bfxf, _reb2btd, _reb2bliRB2B. Links the visit to an identified business profile. 1 month.
  • _reb2bresolveRB2B. Holds a match while it is being resolved. 2 days.
  • _reb2sessionID, _reb2bloadedRB2B. The current visit, and a guard against loading the script twice. 30 minutes, 1 second.

Functional

On unless you turn it off. Remembers choices such as a collapsed section.

View cookies (none today)