Dr. Sian S. Chisholm, MD

  • Orange Park, FL
  • Gastroenterologist
NPI1346392800PAC ID7113011131
Medicare services, 2024
844
Medicare patients, 2024
397
Part D claims, 2024
805
Publications
9
MIPS score, 2024
79
Practice address
805 Wells Rd, Orange Park, FL 32073
Practice phone
Call (904) 385-4854
Professional email
Get professional email
Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

Orange Park Endoscopy Center

Surgery Center - Medicare-Certified · Orange Park, Florida

See all 5 affiliations

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Dr. Sian S. Chisholm is a gastroenterologist in Orange Park, Florida

Dr. Chisholm practices at Orange Park Endoscopy Center in Orange Park, Florida.

Dr. Chisholm's NPI, 1346392800, was assigned on January 17, 2007. Dr. Chisholm graduated from Ross University School of Medicine in 2004. Dr. Chisholm holds Florida license ME99207.

NPI and contact details
Medicare PAC ID
7113011131
NPI enumeration date
January 17, 2007
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(904) 385-4854
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Female
Estimated age
48
Medical school graduation
2004

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

Dr. Sian S. Chisholm practices at Orange Park Endoscopy Center in Orange Park, Florida

Dr. Chisholm's primary practice is Orange Park Endoscopy Center, at 805 Wells Rd, Orange Park, FL 32073. The practice phone is (904) 385-4854.

  • Orange Park Endoscopy Center
    805 Wells Rd, Orange Park, FL 32073Phone(904) 385-4854

Source: Dmand AI Affiliation Data

Dr. Sian S. Chisholm is affiliated with 4 sites of care and 1 medical group

Dr. Chisholm's primary practice is Orange Park Endoscopy Center in Orange Park, Florida. Dr. Chisholm is also affiliated with Baptist Medical Center Jacksonville. The medical group on file is Borland Groover. Dmand AI also links Dr. Chisholm to 1 more hospital and 1 group practice or clinic, each named with a free account.

See all 5 affiliations for Dr. Chisholm

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

Dmand AI tracks the EHR system at Dr. Sian S. Chisholm's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chisholm practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Orange Park Endoscopy CenterAvailable with a free account
+3 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Sian S. Chisholm is one of 1,364 gastroenterologists in Florida

Gastroenterology is Dr. Chisholm's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Chisholm is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Chisholm's licenses on file in 3 states: Florida, Texas and Oklahoma.

Specialties and state licenses

  • Gastroenterology, FloridaPrimaryLicense ME99207 · 2007 to 2027 · taxonomy 207RG0100X
  • Texas license2013 to 2016
  • Oklahoma license2010 to 2014

Clinical focus

Dmand AI lists acid reflux, acute gastroduodenitis, chronic inflammatory bowel disease (IBD), cirrhosis of the liver, colonoscopy, gastroduodenitis, gastroenteritis and gastrointestinal bleeding among the conditions Dr. Chisholm treats.

Gastroenterologists near Dr. Chisholm

Counts of gastroenterologists 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. Sian S. Chisholm billed Medicare for 844 services in 2024

CMS data shows 844 Medicare services from Dr. Chisholm across 14 procedure codes in 2024, for 397 Medicare patients. Medicare paid $79,804 for them.

Medicare services, 2024844
Medicare patients397
Paid by Medicare$79,804
Procedure codes14

Dr. Chisholm's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 7122024: 55222%
Surgery
2023: 3302024: 27317%
Tests and treatments
2023: 02024: 19
Other services
2023: 132024: 0100%

Where Dr. Chisholm's Medicare services took place, 2024

  • In an office32138%
  • In a facility52362%

Dr. Chisholm compared with the Florida median for gastroenterologists, 2024

  • Dr. Chisholm
  • Florida median
Medicare services
844vs 58245% above
Medicare patients
397vs 32223% above
Part D claims
658vs 50231% above

Medians across 1,320 gastroenterologists in Florida with Dmand AI profiles that report each measure.

Dr. Chisholm'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 Dr. Chisholm

Need commercial claims for Dr. Chisholm?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chisholm and other gastroenterologists in Florida.

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

Dr. Sian S. Chisholm treated 397 Medicare patients in 2024, average age 73

CMS counts 397 Medicare patients who saw Dr. Chisholm in 2024. The largest group is 65 to 74, with 201 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 6% are also on Medicaid. Their average risk score is 1.62, 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. Chisholm's median patient age at 62, with 70% women.

Medicare patients, 2024397
Average age73
Average risk score1.62
Also on Medicaid6%

Dr. Chisholm's Medicare patients by age, 2024

Dr. Chisholm's Medicare patients by sex, 2024

  • Women28973%
  • Men10827%

Chronic conditions among Dr. Chisholm's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis55%
  4. Ischemic heart disease40%
  5. Diabetes39%
  6. Mood disorders37%
  7. Anxiety35%
  8. Chronic kidney disease35%

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

Dr. Chisholm'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

  • Women70%
  • Men29%

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

Dr. Sian S. Chisholm wrote 805 Medicare Part D claims in 2024

In 2024, Dr. Chisholm wrote 805 Medicare Part D claims for 219 patients. 77% of them were for generic drugs. CMS names the drug for 658 of them, across 13 drugs with 11 or more claims each, at $125,732 in total drug cost. In 2023, CMS named 572 claims across 15 drugs.

Part D claims, 2024805
Drugs named by CMS13
Total drug cost$125,732
Part D patients219

Dr. Chisholm's Part D claims by kind of drug, 2024

  • Generic622 claims77%
  • Brand-name183 claims23%

Dr. Chisholm'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 Dr. Chisholm's Part D claims, 2024

  • Antibiotics3%24 of 805 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 5722024: 65815%

Drugs named by CMS: 13 in 2024, 15 in 2023.

See all prescribing by Dr. Chisholm

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

Dr. Sian S. Chisholm scored 79 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 79 out of 100 for Dr. Chisholm for performance year 2024, reported as part of a group. Dr. Chisholm accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chisholm as offering telehealth. CMS counts 103 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Chisholm, more than 77% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Chisholm's MIPS scores, performance year 2024

  • 79of 100Final score
  • 69.7of 100Quality
  • 89of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 69of 100Cost

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

Where Dr. Chisholm ranks in Medicare procedure volume

Upper gastrointestinal (GI) endoscopy for acid reflux
77th percentile103 procedures
Colonoscopy
68th percentile62 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

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

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Dr. Sian S. Chisholm has 9 publications on record

Dmand AI links 9 papers to Dr. Chisholm, published from 2017 to 2018. Dr. Chisholm's most frequent co-authors are William M. Tierney, MD, Aftab Ahmed, MD and Bharat Kumar Gummadi, MD.

Papers9
Years published2017 to 2018

Dr. Chisholm's most frequent co-authors

Recent publications by Dr. Chisholm

See all 9 publications and co-authors

See who Dr. Chisholm researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chisholm works with, so you can find a warm path to the right gastroenterologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Sian S. Chisholm received $285 in industry payments from 2018 to 2025

CMS Open Payments shows 16 general payments to Dr. Chisholm from 8 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $81.

General payments to Dr. Chisholm by program year, 2018 to 2025

Companies that paid Dr. Chisholm the most, 2018 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Chisholm

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

Dr. Sian S. Chisholm graduated from Ross University School of Medicine

Dr. Chisholm graduated from Ross University School of Medicine in 2004.

  1. Medical schoolRoss University School of Medicine
  2. Board certified in gastroenterologyAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Sian S. Chisholm accepts plans from 19 insurance carriers

Dr. Chisholm is in network with 19 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.

Plan types Dr. Chisholm accepts, by number of carriers

  1. PPO12
  2. HMO10
  3. Medicare9
  4. EPO4
  5. POS3
  6. Medicaid2

Source: Dmand AI Insurance Network Data

Sources for Dr. Sian S. Chisholm'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network 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 Dr. Sian S. Chisholm

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. Sian S. Chisholm's NPI number?

Dr. Sian S. Chisholm's NPI number is 1346392800. It was assigned on January 17, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Sian S. Chisholm?

Dr. Sian S. Chisholm is a gastroenterologist in Orange Park, Florida. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).

Where does Dr. Sian S. Chisholm practice?

Dr. Chisholm practices at 805 Wells Rd, Orange Park, FL 32073. Dr. Chisholm's primary practice is Orange Park Endoscopy Center in Orange Park, Florida. Dmand AI also links Dr. Chisholm to 1 hospital and 1 group practice or clinic.

What is Dr. Sian S. Chisholm's office phone number?

The practice phone on file for Dr. Chisholm is (904) 385-4854.

What is Dr. Sian S. Chisholm's medical license number?

Dr. Chisholm holds Florida license ME99207, one of the licenses on file in 3 states.

Which states has Dr. Sian S. Chisholm been licensed in?

Dmand AI has state licenses on file for Dr. Chisholm in Florida (2007 to 2027), Texas (2013 to 2016) and Oklahoma (2010 to 2014).

Which hospitals is Dr. Sian S. Chisholm affiliated with?

Dr. Chisholm is affiliated with Baptist Medical Center Jacksonville. Dmand AI links Dr. Chisholm to 1 more hospital.

What medical group is Dr. Sian S. Chisholm part of?

Dr. Chisholm is linked to Borland Groover.

Does Dr. Sian S. Chisholm accept Medicare?

Yes. CMS data shows Dr. Chisholm billed Medicare for 844 services in 2024, and Dr. Chisholm accepts Medicare assignment.

Does Dr. Sian S. Chisholm offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Chisholm as offering telehealth services.

Show 11 more questionsShow fewer questions

What is Dr. Sian S. Chisholm's MIPS score?

Dr. Chisholm's MIPS final score for performance year 2024 is 79 out of 100, reported as part of a group.

How many Medicare patients does Dr. Sian S. Chisholm see?

CMS counts 397 Medicare patients who saw Dr. Chisholm in 2024, with an average age of 73.

Is Dr. Sian S. Chisholm board certified?

Yes. Dr. Chisholm is board certified in gastroenterology by the American Board of Internal Medicine.

What services does Dr. Sian S. Chisholm bill to Medicare?

In 2024, Dr. Chisholm's most billed Medicare services were office visit, established patient (99214), hospital inpatient care (99233) and surgery: digestive system (45380).

Where did Dr. Sian S. Chisholm go to medical school?

Dr. Chisholm graduated from Ross University School of Medicine in 2004.

What drugs does Dr. Sian S. Chisholm prescribe most?

In 2024 Medicare Part D data, Dr. Chisholm's most prescribed drugs by claims were Pantoprazole Sodium, Omeprazole and Famotidine.

Has Dr. Sian S. Chisholm received payments from drug or device companies?

CMS Open Payments shows $285 in general payments to Dr. Chisholm from 8 companies from 2018 to 2025. The largest total came from Abbvie Inc.

How long has Dr. Sian S. Chisholm been practicing?

Dr. Chisholm graduated from medical school in 2004, 22 years ago.

Does Dr. Sian S. Chisholm do research?

Dmand AI links 9 publications to Dr. Chisholm, published from 2017 to 2018.

Who does Dr. Sian S. Chisholm publish with?

Dr. Chisholm's most frequent co-authors are William M. Tierney, MD (2 shared papers), Aftab Ahmed, MD (1 shared paper) and Bharat Kumar Gummadi, MD (1 shared paper).

What insurance does Dr. Sian S. Chisholm accept?

Dr. Chisholm is in network with 19 carriers, including Aetna, Elevance and United Healthcare. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.

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