Dr. Norman Anyi Chang, MD
- Medicare services, 2024
- 2,547
- Medicare patients, 2024
- 432
- Part D claims, 2024
- 3,145
- Hospital affiliations
- 3
- Industry payments
- $13,639
- Practice address
- 611 Jefferson Davis Hwy, Fredericksburg, VA 22401
- Practice phone
- Call (540) 371-4141
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Commonwealth Internal Medicine
Fredericksburg, Virginia
Find Dr. Chang'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.
Dr. Norman Anyi Chang is an internist in Fredericksburg, Virginia
Dr. Chang practices at Commonwealth Internal Medicine in Fredericksburg, Virginia.
Dr. Chang's NPI, 1629064605, was assigned on September 23, 2005. Dr. Chang graduated from Medical College of Georgia School of Medicine in 1995. Dr. Chang holds Virginia license 0101058399.
- NPI
- 1629064605NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587563168
- NPI enumeration date
- September 23, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (540) 371-4141
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Norman Anyi Chang practices at Commonwealth Internal Medicine in Fredericksburg, Virginia
Dr. Chang's primary practice is Commonwealth Internal Medicine, at 611 Jefferson Davis Hwy, Fredericksburg, VA 22401 in Fredericksburg City. The practice phone is (540) 371-4141.
- Commonwealth Internal Medicine611 Jefferson Davis Hwy, Fredericksburg, VA 22401 · Fredericksburg CityPhone(540) 371-4141
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Norman Anyi Chang is affiliated with 12 sites of care and 4 medical groups
Dr. Chang's primary practice is Commonwealth Internal Medicine in Fredericksburg, Virginia. Dr. Chang is also affiliated with Mary Washington Hospital. The medical group on file is Commonwealth Internal Medicine. Dmand AI also links Dr. Chang to 2 more hospitals, 5 home health agencies, 3 group practices and clinics and 3 medical groups, each 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 Dr. Norman Anyi Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 11 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Commonwealth Internal Medicine | Available with a free account |
| +11 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Norman Anyi Chang is one of 3,339 internists in Virginia
Internal medicine is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chang is licensed in Virginia.
Specialties and state licenses
- Internal medicine, VirginiaPrimary
Internists near Dr. Chang
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. Norman Anyi Chang billed Medicare for 2,547 services in 2024
CMS data shows 2,547 Medicare services from Dr. Chang across 17 procedure codes in 2024, for 432 Medicare patients. Medicare paid $165,418 for them.
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,6772024: 1,84010%
- Tests and treatments
- 2023: 2082024: 28135%
- Lab and pathology
- 2023: 1532024: 21239%
- Other services
- 2023: 912024: 988%
- Surgery
- 2023: 492024: 6022%
- Drugs given in the office
- 2023: 502024: 5612%
Where Dr. Chang's Medicare services took place, 2024
- In an office1,32252%
- In a facility1,22548%
Dr. Chang compared with the Virginia median for internists, 2024
- Dr. Chang
- Virginia median
- Medicare services
- 2,547vs 6074.2 times
- Medicare patients
- 432vs 24676% above
- Part D claims
- 2,444vs 22410.9 times
Medians across 3,182 internists in Virginia with Dmand AI profiles that report each measure.
Dr. Chang'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. Norman Anyi Chang treated 432 Medicare patients in 2024, average age 77
CMS counts 432 Medicare patients who saw Dr. Chang in 2024. The largest group is 75 to 84, with 186 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 4% are also on Medicaid. Their average risk score is 1.58, 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. Chang's median patient age at 73, with 49% women.
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women22352%
- Men20948%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Ischemic heart disease41%
- Diabetes36%
- Anxiety29%
- Atrial fibrillation28%
- Chronic kidney disease28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women49%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Norman Anyi Chang wrote 3,145 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 3,145 Medicare Part D claims for 234 patients. 85% of them were for generic drugs. CMS names the drug for 2,444 of them, across 82 drugs with 11 or more claims each, at $282,649 in total drug cost. In 2023, CMS named 2,252 claims across 80 drugs.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic2,674 claims85%
- Brand-name444 claims14%
- Other27 claims1%
Dr. Chang'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. Chang's Part D claims, 2024
- Opioids5%151 of 3,145 claims
- Antibiotics6%195 of 3,145 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: 2,2522024: 2,4449%
Drugs named by CMS: 82 in 2024, 80 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. Norman Anyi Chang ranks in the 74th percentile for removal of tissue in Medicare
Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chang as offering telehealth. CMS counts 31 procedures of removal of tissue by Dr. Chang, more than 74% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Chang ranks in Medicare procedure volume
- Removal of tissue
- 74th percentile31 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Norman Anyi Chang received $13,639 in industry payments from 2016 to 2025
CMS Open Payments shows 823 general payments to Dr. Chang from 65 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 80% of the total. Sanofi and Genzyme US Companies paid the most, $1,417.
General payments to Dr. Chang by program year, 2016 to 2025
General payments to Dr. Chang by kind, 2016 to 2025
- Food and beverage$10,90280%
- Consulting fees$1,62512%
- Speaker and faculty fees$9957%
- Education$1161%
Companies that paid Dr. Chang the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Norman Anyi Chang graduated from Medical College of Georgia School of Medicine
Dr. Chang graduated from Medical College of Georgia School of Medicine in 1995.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Norman Anyi Chang'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (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 Dr. Norman Anyi Chang
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. Norman Anyi Chang's NPI number?
Dr. Norman Anyi Chang's NPI number is 1629064605. It was assigned on September 23, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Norman Anyi Chang?
Dr. Norman Anyi Chang is an internist in Fredericksburg, Virginia. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Norman Anyi Chang practice?
Dr. Chang practices at 611 Jefferson Davis Hwy, Fredericksburg, VA 22401. Dr. Chang's primary practice is Commonwealth Internal Medicine in Fredericksburg, Virginia. Dmand AI also links Dr. Chang to 2 hospitals, 5 home health agencies, 3 group practices and clinics and 3 medical groups.
What is Dr. Norman Anyi Chang's office phone number?
The practice phone on file for Dr. Chang is (540) 371-4141.
What is Dr. Norman Anyi Chang's medical license number?
Dr. Chang holds Virginia license 0101058399.
Which hospitals is Dr. Norman Anyi Chang affiliated with?
Dr. Chang is affiliated with Mary Washington Hospital. Dmand AI links Dr. Chang to 2 more hospitals.
What medical group is Dr. Norman Anyi Chang part of?
Dr. Chang is linked to Commonwealth Internal Medicine. Dmand AI links Dr. Chang to 3 more medical groups.
Does Dr. Norman Anyi Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 2,547 services in 2024, and Dr. Chang accepts Medicare assignment.
Does Dr. Norman Anyi Chang offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chang as offering telehealth services.
How many Medicare patients does Dr. Norman Anyi Chang see?
CMS counts 432 Medicare patients who saw Dr. Chang in 2024, with an average age of 77.
Show 5 more questionsShow fewer questions
What services does Dr. Norman Anyi Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and special service (99183).
Where did Dr. Norman Anyi Chang go to medical school?
Dr. Chang graduated from Medical College of Georgia School of Medicine in 1995.
What drugs does Dr. Norman Anyi Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Losartan Potassium.
Has Dr. Norman Anyi Chang received payments from drug or device companies?
CMS Open Payments shows $13,639 in general payments to Dr. Chang from 65 companies from 2016 to 2025. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. Norman Anyi Chang been practicing?
Dr. Chang graduated from medical school in 1995, 31 years ago.
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