Jack Marshall Stark, PA-C
- Medicare services, 2024
- 914
- Medicare patients, 2024
- 304
- Part D claims, 2024
- 1,362
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 100 Reserve Rd, Danbury, CT 06810
- Practice phone
- Call (860) 284-5200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Prohealth Physicians
Danbury, Connecticut
Find Jack Stark'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.
Jack Marshall Stark is a physician assistant in Danbury, Connecticut
Jack Stark practices at Prohealth Physicians in Danbury, Connecticut.
Jack Stark's NPI, 1669436820, was assigned on April 14, 2006. Jack Stark holds Connecticut license 000044.
- NPI
- 1669436820NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4082850672
- NPI enumeration date
- April 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (860) 284-5200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Jack Marshall Stark practices at Prohealth Physicians in Danbury, Connecticut
Jack Stark's primary practice is Prohealth Physicians, at 100 Reserve Rd, Danbury, CT 06810 in Western Ct County. The practice phone is (860) 284-5200.
- Prohealth Physicians100 Reserve Rd, Danbury, CT 06810 · Western Ct CountyPhone(860) 284-5200
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Jack Marshall Stark is affiliated with 2 sites of care and 1 medical group
Jack Stark's primary practice is Prohealth Physicians in Danbury, Connecticut. The medical group on file is ProHealth Physicians. Dmand AI also links Jack Stark to 1 more group practice or clinic, 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 Jack Marshall Stark's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Jack Stark practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Prohealth Physicians | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Jack Marshall Stark is one of 888 physician assistants in Connecticut
Medical is Jack Stark's primary specialty in the NPI Registry, under taxonomy code 363AM0700X. Jack Stark is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA). Jack Stark is licensed in Connecticut.
Specialties and state licenses
- Medical physician assistant, ConnecticutPrimary
Clinical focus
Dmand AI lists acute sinusitis, acute skin infection, ankle or foot injury, anxiety, contact dermatitis, ear eustachian tube disorders, gastroenteritis and gout among the conditions Jack Stark treats.
Physician assistants near Jack Stark
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
Jack Marshall Stark billed Medicare for 914 services in 2024
CMS data shows 914 Medicare services from Jack Stark across 16 procedure codes in 2024, for 304 Medicare patients. Medicare paid $33,527 for them. Every service was in an office.
Jack Stark's Medicare services by type, 2024
- Lab and pathology439
- Office and hospital visits374
- Surgery67
- Tests and treatments21
- Other services13
Jack Stark compared with the Connecticut median for physician assistants, 2024
- Jack Stark
- Connecticut median
- Medicare services
- 914vs 2733.3 times
- Medicare patients
- 304vs 1003.0 times
- Part D claims
- 953vs 54874% above
Medians across 601 physician assistants in Connecticut with Dmand AI profiles that report each measure.
Jack Stark'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 Jack Stark and other physician assistants in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Jack Marshall Stark treated 304 Medicare patients in 2024, average age 76
CMS counts 304 Medicare patients who saw Jack Stark in 2024. The largest group is 65 to 74, with 142 patients. 75% of them have high cholesterol, and 66% have high blood pressure. 15% are also on Medicaid. Their average risk score is 1.01, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Jack Stark's median patient age at 62, with 62% women.
Jack Stark's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Jack Stark's Medicare patients by sex, 2024
- Women16554%
- Men13946%
Chronic conditions among Jack Stark's Medicare patients, 2024
- High cholesterol75%
- High blood pressure66%
- Arthritis45%
- Ischemic heart disease25%
- Anxiety24%
- Diabetes21%
- Mood disorders21%
- Osteoporosis19%
Share of Medicare patients with each condition. A patient can have several.
Jack Stark'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
- Women62%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Jack Marshall Stark wrote 1,362 Medicare Part D claims in 2024
In 2024, Jack Stark wrote 1,362 Medicare Part D claims for 386 patients. 88% of them were for generic drugs. CMS names the drug for 953 of them, across 34 drugs with 11 or more claims each, at $28,812 in total drug cost.
Jack Stark's Part D claims by kind of drug, 2024
- Generic1,205 claims88%
- Brand-name and other157 claims12%
Jack Stark'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 Jack Stark's Part D claims, 2024
- Opioids1%14 of 1,362 claims
- Antibiotics5%69 of 1,362 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
Jack Marshall Stark offers telehealth to Medicare patients
Jack Stark accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Jack Stark as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Jack Marshall Stark is board certified in certified physician assistant
- Board certified in certified physician assistant
Source: Dmand AI Professional Profile Data
Sources for Jack Marshall Stark'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) |
| 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 Jack Marshall Stark
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Jack Marshall Stark's NPI number?
Jack Marshall Stark's NPI number is 1669436820. It was assigned on April 14, 2006, and it is active in the NPI Registry.
What does Jack Marshall Stark specialize in?
Jack Marshall Stark is a physician assistant in Danbury, Connecticut. The primary specialty in the NPI Registry is Medical Physician Assistant (taxonomy code 363AM0700X).
Where does Jack Marshall Stark practice?
Jack Stark practices at 100 Reserve Rd, Danbury, CT 06810. Jack Stark's primary practice is Prohealth Physicians in Danbury, Connecticut. Dmand AI also links Jack Stark to 1 group practice or clinic.
What is Jack Marshall Stark's office phone number?
The practice phone on file for Jack Stark is (860) 284-5200.
What is Jack Marshall Stark's medical license number?
Jack Stark holds Connecticut license 000044.
What medical group is Jack Marshall Stark part of?
Jack Stark is linked to ProHealth Physicians.
Does Jack Marshall Stark accept Medicare?
Yes. CMS data shows Jack Stark billed Medicare for 914 services in 2024, and Jack Stark accepts Medicare assignment.
Does Jack Marshall Stark offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Jack Stark as offering telehealth services.
How many Medicare patients does Jack Marshall Stark see?
CMS counts 304 Medicare patients who saw Jack Stark in 2024, with an average age of 76.
Is Jack Marshall Stark board certified?
Yes. Jack Stark is board certified in certified physician assistant by the National Commission on Certification of Physician Assistants (NCCPA).
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What services does Jack Marshall Stark bill to Medicare?
In 2024, Jack Stark's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and lab and pathology test (85025).
What drugs does Jack Marshall Stark prescribe most?
In 2024 Medicare Part D data, Jack Stark's most prescribed drugs by claims were Rosuvastatin Calcium, Atorvastatin Calcium and Levothyroxine Sodium.
How long has Jack Marshall Stark been practicing?
Jack Stark graduated from medical school in 1987, 39 years ago.
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