Dr. Ya Tze Tong, MD
- Medicare services, 2024
- 284
- Medicare patients, 2024
- 95
- Part D claims, 2024
- 1,292
- Hospital affiliations
- 3
- Industry payments
- $303
- Practice address
- 133 Old Road To 9 Acre Corner, West Concord, MA 01742
- Practice phone
- Call (978) 369-1400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Tong's professional email, personal email and mobile number
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Dr. Ya Tze Tong is an internist in Concord, Massachusetts
Dr. Tong practices at Emerson Hospital in West Concord, Massachusetts, part of Emerson Health System.
Dr. Tong's NPI, 1245298157, was assigned on May 2, 2006. Dr. Tong holds Massachusetts license 77476.
- NPI
- 1245298157NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5597898676
- NPI enumeration date
- May 2, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (978) 369-1400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 71
- Medical school graduation
- 1981
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ya Tze Tong practices at Emerson Hospital in West Concord, Massachusetts
Dr. Tong's primary practice is Emerson Hospital, at 133 Old Road To 9 Acre Corner, West Concord, MA 01742 in Middlesex County. The practice phone is (978) 369-1400.
- Emerson Hospital133 Old Road To 9 Acre Corner, West Concord, MA 01742 · Middlesex CountyPhone(978) 369-1400
Source: Dmand AI Affiliation Data
Dr. Ya Tze Tong is affiliated with 5 sites of care and 1 medical group
Dr. Tong's primary practice is Emerson Hospital in West Concord, Massachusetts, part of Emerson Health System. Dr. Tong is also affiliated with Lahey Clinic. The medical group on file is Emerson Health. Dmand AI also links Dr. Tong to 1 more hospital, 1 group practice or clinic and 1 therapy and rehab clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ya Tze Tong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tong practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Emerson Hospital | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Emerson Health System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Ya Tze Tong is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Tong's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Tong is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Tong
Counts of internists 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. Ya Tze Tong billed Medicare for 284 services in 2024
CMS data shows 284 Medicare services from Dr. Tong across 7 procedure codes in 2024, for 95 Medicare patients. Medicare paid $27,742 for them. Every service was in an office.
Dr. Tong's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1612024: 1737%
- Other services
- 2023: 822024: 842%
- Tests and treatments
- 2023: 582024: 2753%
Dr. Tong compared with the Massachusetts median for internists, 2024
- Dr. Tong
- Massachusetts median
- Medicare services
- 284vs 43134% below
- Medicare patients
- 95vs 19451% below
- Part D claims
- 1,005vs 4022.5 times
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Tong'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
Dr. Ya Tze Tong treated 95 Medicare patients in 2024, average age 74
CMS counts 95 Medicare patients who saw Dr. Tong in 2024. The largest group is 65 to 74, with 39 patients. 75% of them have high cholesterol, and 54% have high blood pressure. Their average risk score is 0.89, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Tong's median patient age at 61, with 74% women.
Dr. Tong's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Tong's Medicare patients by sex, 2024
- Women7983%
- Men1617%
Chronic conditions among Dr. Tong's Medicare patients, 2024
- High cholesterol75%
- High blood pressure54%
- Arthritis35%
- Anxiety34%
- Osteoporosis32%
- Chronic kidney disease31%
- Mood disorders24%
- Ischemic heart disease23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tong's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women74%
- Men25%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ya Tze Tong wrote 1,292 Medicare Part D claims in 2024
In 2024, Dr. Tong wrote 1,292 Medicare Part D claims for 190 patients. 93% of them were for generic drugs. CMS names the drug for 1,005 of them, across 30 drugs with 11 or more claims each, at $13,858 in total drug cost. In 2023, CMS named 1,079 claims across 28 drugs.
Dr. Tong's Part D claims by kind of drug, 2024
- Generic1,200 claims93%
- Brand-name and other92 claims7%
Dr. Tong'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. Tong's Part D claims, 2024
- Antibiotics2%21 of 1,292 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: 1,0792024: 1,0057%
Drugs named by CMS: 30 in 2024, 28 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. Ya Tze Tong offers telehealth to Medicare patients
Dr. Tong accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Tong as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Ya Tze Tong received $303 in industry payments from 2023 to 2025
CMS Open Payments shows 15 general payments to Dr. Tong from 6 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $91.
General payments to Dr. Tong by program year, 2023 to 2025
Companies that paid Dr. Tong the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ya Tze Tong'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) |
| 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. Ya Tze Tong
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. Ya Tze Tong's NPI number?
Dr. Ya Tze Tong's NPI number is 1245298157. It was assigned on May 2, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ya Tze Tong?
Dr. Ya Tze Tong is an internist in Concord, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ya Tze Tong practice?
Dr. Tong practices at 133 Old Road To 9 Acre Corner, West Concord, MA 01742. Dr. Tong's primary practice is Emerson Hospital in West Concord, Massachusetts, part of Emerson Health System. Dmand AI also links Dr. Tong to 1 hospital, 1 group practice or clinic and 1 therapy and rehab clinic.
What is Dr. Ya Tze Tong's office phone number?
The practice phone on file for Dr. Tong is (978) 369-1400.
What is Dr. Ya Tze Tong's medical license number?
Dr. Tong holds Massachusetts license 77476.
Which hospitals is Dr. Ya Tze Tong affiliated with?
Dr. Tong practices at Emerson Hospital in West Concord, Massachusetts. Dr. Tong is also affiliated with Lahey Clinic. Dmand AI links Dr. Tong to 1 more hospital.
What medical group is Dr. Ya Tze Tong part of?
Dr. Tong is linked to Emerson Health.
Does Dr. Ya Tze Tong accept Medicare?
Yes. CMS data shows Dr. Tong billed Medicare for 284 services in 2024, and Dr. Tong accepts Medicare assignment.
Does Dr. Ya Tze Tong offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Tong as offering telehealth services.
How many Medicare patients does Dr. Ya Tze Tong see?
CMS counts 95 Medicare patients who saw Dr. Tong in 2024, with an average age of 74.
Show 4 more questionsShow fewer questions
What services does Dr. Ya Tze Tong bill to Medicare?
In 2024, Dr. Tong's most billed Medicare services were medicare service (G0439), office visit, established patient (99213) and office visit, established patient (99214).
What drugs does Dr. Ya Tze Tong prescribe most?
In 2024 Medicare Part D data, Dr. Tong's most prescribed drugs by claims were Levothyroxine Sodium, Atorvastatin Calcium and Amlodipine Besylate.
Has Dr. Ya Tze Tong received payments from drug or device companies?
CMS Open Payments shows $303 in general payments to Dr. Tong from 6 companies from 2023 to 2025. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Ya Tze Tong been practicing?
Dr. Tong graduated from medical school in 1981, 45 years ago.
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