Gregory Machen Duck, PA

  • Fort Worth, TX
  • Physician assistant
NPI1386165439PAC ID2062784747
Medicare services, 2024
65
Medicare patients, 2024
41
Part D claims, 2024
655
MIPS score, 2024
96
Hospital affiliations
1
Practice address
1500 S Main St, Fort Worth, TX 76104
Practice phone
Call (817) 921-3431
Professional email
Get professional email
Personal email
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Mobile number
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Social profiles

Primary practice

John Peter Smith Hospital

Hospital · Fort Worth, Texas

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Gregory Machen Duck is a physician assistant in Fort Worth, Texas

Gregory Duck practices at John Peter Smith Hospital in Fort Worth, Texas, part of Tarrant County, Texas.

Gregory Duck's NPI, 1386165439, was assigned on June 29, 2017.

NPI and contact details
Medicare PAC ID
2062784747
NPI enumeration date
June 29, 2017
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(817) 921-3431
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Male
Estimated age
35
Medical school graduation
2017

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Gregory Machen Duck practices at John Peter Smith Hospital in Fort Worth, Texas

Gregory Duck's primary practice is John Peter Smith Hospital, at 1500 S Main St, Fort Worth, TX 76104 in Tarrant County. The practice phone is (817) 921-3431.

Source: Dmand AI Affiliation Data

Gregory Machen Duck is affiliated with 2 sites of care and 1 medical group

Gregory Duck's primary practice is John Peter Smith Hospital in Fort Worth, Texas, part of Tarrant County, Texas. The medical group on file is Acclaim Health. Dmand AI also links Gregory Duck to 1 more group practice or clinic, named with a free account.

See all 3 affiliations for Gregory Duck

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Gregory Machen Duck's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Gregory Duck practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
John Peter Smith HospitalAvailable with a free account
+1 more affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

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Gregory Machen Duck is one of 8,663 physician assistants in Texas

Physician assistant is Gregory Duck's primary specialty in the NPI Registry, under taxonomy code 363A00000X.

Specialties and state licenses

  • Physician assistantPrimarytaxonomy 363A00000X

Physician assistants near Gregory Duck

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

Gregory Machen Duck billed Medicare for 65 services in 2024

CMS data shows 65 Medicare services from Gregory Duck across 1 procedure code in 2024, all of them office visits, for 41 Medicare patients. Medicare paid $3,852 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202465
Medicare patients41
Paid by Medicare$3,852
Procedure codes1

Gregory Duck compared with the Texas median for physician assistants, 2024

  • Gregory Duck
  • Texas median
Medicare services
65vs 22972% below
Medicare patients
41vs 9959% below
Part D claims
575vs 29694% above

Medians across 5,541 physician assistants in Texas with Dmand AI profiles that report each measure.

Gregory Duck'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Gregory Machen Duck treated 41 Medicare patients in 2024, average age 67

CMS counts 41 Medicare patients who saw Gregory Duck in 2024. The largest group is 65 to 74, with 18 patients. 75% of them have heart failure, and 75% have high blood pressure. 44% are also on Medicaid. Their average risk score is 2.03, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Gregory Duck's median patient age at 62, with 39% women.

Medicare patients, 202441
Average age67
Average risk score2.03
Also on Medicaid44%

Gregory Duck's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Gregory Duck's Medicare patients by sex, 2024

  • Women1639%
  • Men2561%

Chronic conditions among Gregory Duck's Medicare patients, 2024

  1. Heart failure75%
  2. High blood pressure75%
  3. High cholesterol71%
  4. Diabetes63%
  5. Chronic kidney disease59%
  6. Ischemic heart disease51%
  7. Atrial fibrillation39%
  8. Anxiety37%

Share of Medicare patients with each condition. A patient can have several.

Gregory Duck's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 62

Patient panel by sex, all payers

  • Women39%
  • Men58%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Gregory Machen Duck wrote 655 Medicare Part D claims in 2024

In 2024, Gregory Duck wrote 655 Medicare Part D claims for 127 patients. 77% of them were for generic drugs. CMS names the drug for 575 of them, across 12 drugs with 11 or more claims each, at $110,113 in total drug cost.

Part D claims, 2024655
Drugs named by CMS12
Total drug cost$110,113
Part D patients127

Gregory Duck's Part D claims by kind of drug, 2024

  • Generic504 claims77%
  • Brand-name151 claims23%

Gregory Duck'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 Gregory Duck

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

Gregory Machen Duck scored 96 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 96 out of 100 for Gregory Duck for performance year 2024, reported as part of a group. Gregory Duck accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Gregory Duck's MIPS scores, performance year 2024

  • 96of 100Final score
  • 80.4of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 79of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Gregory Machen Duck received $1,284 in industry payments in 2024

CMS Open Payments shows 11 general payments to Gregory Duck from 2 drug and device companies in 2024. Travel and lodging make up the largest share, 80% of the total. Abbott Laboratories paid the most, $1,262.

General payments to Gregory Duck by kind, 2024 to 2024

$1.3Kin total
  • Travel and lodging$1,03280%
  • Food and beverage$25320%

Companies that paid Gregory Duck the most, 2024 to 2024

Share is of all general payments to this clinician.

See all payments to Gregory Duck

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Sources for Gregory Machen Duck'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 phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
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 Gregory Machen Duck

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Gregory Machen Duck's NPI number?

Gregory Machen Duck's NPI number is 1386165439. It was assigned on June 29, 2017, and it is active in the NPI Registry.

What does Gregory Machen Duck specialize in?

Gregory Machen Duck is a physician assistant in Fort Worth, Texas. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).

Where does Gregory Machen Duck practice?

Gregory Duck practices at 1500 S Main St, Fort Worth, TX 76104. Gregory Duck's primary practice is John Peter Smith Hospital in Fort Worth, Texas, part of Tarrant County, Texas. Dmand AI also links Gregory Duck to 1 group practice or clinic.

What is Gregory Machen Duck's office phone number?

The practice phone on file for Gregory Duck is (817) 921-3431.

Which hospitals is Gregory Machen Duck affiliated with?

Gregory Duck practices at John Peter Smith Hospital in Fort Worth, Texas.

What medical group is Gregory Machen Duck part of?

Gregory Duck is linked to Acclaim Health.

Does Gregory Machen Duck accept Medicare?

Yes. CMS data shows Gregory Duck billed Medicare for 65 services in 2024, and Gregory Duck accepts Medicare assignment.

What is Gregory Machen Duck's MIPS score?

Gregory Duck's MIPS final score for performance year 2024 is 96 out of 100, reported as part of a group.

How many Medicare patients does Gregory Machen Duck see?

CMS counts 41 Medicare patients who saw Gregory Duck in 2024, with an average age of 67.

What services does Gregory Machen Duck bill to Medicare?

In 2024, Gregory Duck's most billed Medicare services were office visit, established patient (99214).

Show 3 more questionsShow fewer questions

What drugs does Gregory Machen Duck prescribe most?

In 2024 Medicare Part D data, Gregory Duck's most prescribed drugs by claims were Carvedilol, Furosemide and Spironolactone.

Has Gregory Machen Duck received payments from drug or device companies?

CMS Open Payments shows $1,284 in general payments to Gregory Duck from 2 companies from 2024 to 2024. The largest total came from Abbott Laboratories.

How long has Gregory Machen Duck been practicing?

Gregory Duck graduated from medical school in 2017, 9 years ago.

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