Abdominal InjuriesEmbolization, TherapeuticHepatectomy
Dr. Gary S. Xiao, MD
NPI1043354616PAC ID3870692262
- Medicare services, 2024
- 251
- Medicare patients, 2024
- 96
- Part D claims, 2024
- 159
- Publications
- 9
- MIPS score, 2024
- 85
- Practice address
- 420 S 5th Avenue, West Reading, PA 19611
- Practice phone
- Call (610) 988-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Xiao's professional email, personal email and mobile number
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Dr. Gary S. Xiao is a general surgeon in Reading, Pennsylvania
Dr. Xiao practices at Reading Hospital in West Reading, Pennsylvania, part of Tower Health.
Dr. Xiao's NPI, 1043354616, was assigned on February 16, 2007. Dr. Xiao holds Pennsylvania license MD426406.
NPI and contact details
- NPI
- 1043354616NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3870692262
- NPI enumeration date
- February 16, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (610) 988-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gary S. Xiao practices at Reading Hospital in West Reading, Pennsylvania
Dr. Xiao's primary practice is Reading Hospital, at 420 S 5th Avenue, West Reading, PA 19611 in Berks County. The practice phone is (610) 988-8000.
- Reading Hospital420 S 5th Avenue, West Reading, PA 19611 · Berks CountyPhone(610) 988-8000
Source: Dmand AI Affiliation Data
Dr. Gary S. Xiao is affiliated with 4 sites of care and 2 medical groups
Dr. Xiao's primary practice is Reading Hospital in West Reading, Pennsylvania, part of Tower Health. Dr. Xiao is also affiliated with Pottstown Hospital. The medical group on file is Tower Health Medical Group. Dmand AI also links Dr. Xiao to 1 more hospital, 1 group practice or clinic and 1 medical group, each named with a free account.
Pottstown HospitalTower Health Medical Group1 hospitalName with a free account1 group practice or clinicName with a free account1 medical groupName with a free account
See all 6 affiliations for Dr. XiaoSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gary S. Xiao's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Xiao practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Reading Hospital | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Gary S. Xiao is one of 1,398 general surgeons in Pennsylvania
Surgery is Dr. Xiao's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Xiao is licensed in Pennsylvania.
Specialties and state licenses
- Surgery, PennsylvaniaPrimary
General surgeons near Dr. Xiao
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
1,398general surgeons in Pennsylvania25general surgeons in Reading17general surgeons at Reading Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Gary S. Xiao billed Medicare for 251 services in 2024
CMS data shows 251 Medicare services from Dr. Xiao across 8 procedure codes in 2024, for 96 Medicare patients. Medicare paid $26,491 for them.
Medicare services, 2024251
Medicare patients96
Paid by Medicare$26,491
Procedure codes8
Dr. Xiao's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1932024: 1962%
- Imaging
- 2023: 242024: 3963%
- Surgery
- 2023: 02024: 16
Where Dr. Xiao's Medicare services took place, 2024
- In an office8233%
- In a facility16967%
Dr. Xiao compared with the Pennsylvania median for general surgeons, 2024
- Dr. Xiao
- Pennsylvania median
- Medicare services
- 251vs 15859% above
- Medicare patients
- 96vs 12724% below
- Part D claims
- 85vs 292.9 times
Medians across 1,213 general surgeons in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Xiao'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.
Need commercial claims for Dr. Xiao?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Xiao and other general surgeons in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gary S. Xiao treated 96 Medicare patients in 2024, average age 74
CMS counts 96 Medicare patients who saw Dr. Xiao in 2024. The largest group is 65 to 74, with 48 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.88, 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. Xiao's median patient age at 67, with 48% women.
Medicare patients, 202496
Average age74
Average risk score1.88
Dr. Xiao's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Xiao's Medicare patients by sex, 2024
- Women4951%
- Men4749%
Chronic conditions among Dr. Xiao's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis58%
- Diabetes44%
- Chronic kidney disease41%
- Ischemic heart disease39%
- Mood disorders34%
- Anxiety32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Xiao's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women48%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gary S. Xiao wrote 159 Medicare Part D claims in 2024
In 2024, Dr. Xiao wrote 159 Medicare Part D claims for 59 patients. 87% of them were for generic drugs. CMS names the drug for 85 of them, across 4 drugs with 11 or more claims each, at $5,362 in total drug cost. In 2023, CMS named 59 claims across 2 drugs.
Part D claims, 2024159
Drugs named by CMS4
Total drug cost$5,362
Part D patients59
Dr. Xiao's Part D claims by kind of drug, 2024
- Generic138 claims87%
- Brand-name and other21 claims13%
Dr. Xiao'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. Xiao's Part D claims, 2024
- Opioids33%52 of 159 claims
- Antibiotics13%21 of 159 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: 592024: 8544%
Drugs named by CMS: 4 in 2024, 2 in 2023.
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. Gary S. Xiao scored 85 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for Dr. Xiao for performance year 2024, reported as part of a group. Dr. Xiao accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Xiao's MIPS scores, performance year 2024
- 85of 100Final score
- 73.3of 100Quality
- 97of 100Promoting Interoperability
- 40of 100Improvement Activities
- 78of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)
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. Gary S. Xiao has 9 publications on record
Dmand AI links 9 papers to Dr. Xiao, published from 2018 to 2022. 2018 was the busiest year, with 4. The most frequent topics are Kidney Transplantation, Cadaver and Hepatectomy. Dr. Xiao has published most often in Am J Kidney Dis. Dr. Xiao's most frequent co-authors are Suzanne M. Boyle, MD, Meera Nair Harhay, MD and Karthik M. Ranganna, MD.
Papers9
Years published2018 to 2022
Dr. Xiao's papers by year, 2018 to 2022
Topics Dr. Xiao writes about most
- Kidney Transplantation
- Cadaver
- Hepatectomy
- Kidney Failure, Chronic
- Liver
- Tissue Donors
Dr. Xiao's most frequent co-authors
- Suzanne M. Boyle, MD4 shared papers
- Meera Nair Harhay, MD4 shared papers
- Karthik M. Ranganna, MD4 shared papers
Recent publications by Dr. Xiao
Am J Kidney Dis
CadaverKidney TransplantationPostoperative Complications
CadaverKidney Failure, ChronicKidney Transplantation
See who Dr. Xiao researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Xiao works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Gary S. Xiao received $13,513 in industry payments from 2016 to 2025
CMS Open Payments shows 33 general payments to Dr. Xiao from 16 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 74% of the total. Integra LifeSciences Corporation paid the most, $10,000.
General payments to Dr. Xiao by program year, 2016 to 2025
General payments to Dr. Xiao by kind, 2016 to 2025
$13.5Kin total
- Speaker and faculty fees$10,00074%
- Food and beverage$1,80413%
- Travel and lodging$1,69813%
- Education$100%
Companies that paid Dr. Xiao the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Gary S. Xiao'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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)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-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Dr. Gary S. Xiao
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. Gary S. Xiao's NPI number?
Dr. Gary S. Xiao's NPI number is 1043354616. It was assigned on February 16, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Gary S. Xiao?
Dr. Gary S. Xiao is a general surgeon in Reading, Pennsylvania. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Gary S. Xiao practice?
Dr. Xiao practices at 420 S 5th Avenue, West Reading, PA 19611. Dr. Xiao's primary practice is Reading Hospital in West Reading, Pennsylvania, part of Tower Health. Dmand AI also links Dr. Xiao to 1 hospital, 1 group practice or clinic and 1 medical group.
What is Dr. Gary S. Xiao's office phone number?
The practice phone on file for Dr. Xiao is (610) 988-8000.
What is Dr. Gary S. Xiao's medical license number?
Dr. Xiao holds Pennsylvania license MD426406.
Which hospitals is Dr. Gary S. Xiao affiliated with?
Dr. Xiao practices at Reading Hospital in West Reading, Pennsylvania. Dr. Xiao is also affiliated with Pottstown Hospital. Dmand AI links Dr. Xiao to 1 more hospital.
What medical group is Dr. Gary S. Xiao part of?
Dr. Xiao is linked to Tower Health Medical Group. Dmand AI links Dr. Xiao to 1 more medical group.
Does Dr. Gary S. Xiao accept Medicare?
Yes. CMS data shows Dr. Xiao billed Medicare for 251 services in 2024, and Dr. Xiao accepts Medicare assignment.
What is Dr. Gary S. Xiao's MIPS score?
Dr. Xiao's MIPS final score for performance year 2024 is 85 out of 100, reported as part of a group.
How many Medicare patients does Dr. Gary S. Xiao see?
CMS counts 96 Medicare patients who saw Dr. Xiao in 2024, with an average age of 74.
Show 6 more questionsShow fewer questions
What services does Dr. Gary S. Xiao bill to Medicare?
In 2024, Dr. Xiao's most billed Medicare services were hospital inpatient care (99233), office visit, established patient (99215) and office visit, new patient (99205).
What drugs does Dr. Gary S. Xiao prescribe most?
In 2024 Medicare Part D data, Dr. Xiao's most prescribed drugs by claims were Oxycodone HCl, Furosemide and Amoxicillin-Clavulanate Potass.
Has Dr. Gary S. Xiao received payments from drug or device companies?
CMS Open Payments shows $13,513 in general payments to Dr. Xiao from 16 companies from 2016 to 2025. The largest total came from Integra LifeSciences Corporation.
How long has Dr. Gary S. Xiao been practicing?
Dr. Xiao graduated from medical school in 1986, 40 years ago.
Does Dr. Gary S. Xiao do research?
Dmand AI links 9 publications to Dr. Xiao, published from 2018 to 2022.
Who does Dr. Gary S. Xiao publish with?
Dr. Xiao's most frequent co-authors are Suzanne M. Boyle, MD (4 shared papers), Meera Nair Harhay, MD (4 shared papers) and Karthik M. Ranganna, MD (4 shared papers).
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