Dr. Lydia W. Ng, MD
- Medicare services, 2024
- 1,951
- Medicare patients, 2024
- 166
- Part D claims, 2024
- 112
- Hospital affiliations
- 2
- Industry payments
- $17
- Practice address
- 200 First Street SW, Rochester, MN 55905
- Practice phone
- Call (507) 284-5968
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mayo Clinic Breast Diagnostic Clinic
Mammography / Breast Imaging Center · Rochester, Minnesota
Find Dr. Ng'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. Lydia W. Ng is a radiation oncologist in Rochester, Minnesota
Dr. Ng practices at Mayo Clinic Breast Diagnostic Clinic in Rochester, Minnesota.
Dr. Ng's NPI, 1174879076, was assigned on July 28, 2012. Dr. Ng graduated from Harvard Medical School in 2012. Dr. Ng holds Minnesota license 62447.
- NPI
- 1174879076NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537439393
- NPI enumeration date
- July 28, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (507) 284-5968
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Lydia W. Ng practices at Mayo Clinic Breast Diagnostic Clinic in Rochester, Minnesota
Dr. Ng's primary practice is Mayo Clinic Breast Diagnostic Clinic, at 200 First Street SW, Rochester, MN 55905. The practice phone is (507) 284-5968.
- Mayo Clinic Breast Diagnostic Clinic200 First Street SW, Rochester, MN 55905Phone(507) 284-5968
Source: Dmand AI Affiliation Data
Dr. Lydia W. Ng is affiliated with 5 sites of care and 3 medical groups
Dr. Ng's primary practice is Mayo Clinic Breast Diagnostic Clinic in Rochester, Minnesota. Dr. Ng is also affiliated with Mayo Clinic Health System in Mankato. The medical group on file is Mayo Clinic. Dmand AI also links Dr. Ng to 1 more hospital, 2 medical groups, 1 clinical lab and 1 hospice, each named with a free account. Dr. Ng's employer is on file too: a breast imaging center.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Lydia W. Ng's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ng practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayo Clinic Breast Diagnostic Clinic | Available with a free account |
| +4 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Lydia W. Ng is one of 148 radiation oncologists in Minnesota
Radiation oncology is Dr. Ng's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dmand AI has Dr. Ng's licenses on file in 3 states: Minnesota, California and Massachusetts.
Specialties and state licenses
- Radiation oncology, MinnesotaPrimary
- California license
- Internal medicine, Massachusetts
Radiation oncologists near Dr. Ng
Counts of radiation oncologists 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. Lydia W. Ng billed Medicare for 1,951 services in 2024
CMS data shows 1,951 Medicare services from Dr. Ng across 12 procedure codes in 2024, for 166 Medicare patients. Medicare paid $378,793 for them. Every service was in an office.
Dr. Ng's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 1,7772024: 1,23830%
- Imaging
- 2023: 1,0402024: 69233%
- Office and hospital visits
- 2023: 212024: 21No change
Dr. Ng compared with the Minnesota median for radiation oncologists, 2024
- Dr. Ng
- Minnesota median
- Medicare services
- 1,951vs 9212.1 times
- Medicare patients
- 166vs 12632% above
- Part D claims
- 33vs 2914% above
Medians across 140 radiation oncologists in Minnesota with Dmand AI profiles that report each measure.
Dr. Ng'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 Dr. Ng and other radiation oncologists in Minnesota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Lydia W. Ng treated 166 Medicare patients in 2024, average age 75
CMS counts 166 Medicare patients who saw Dr. Ng in 2024. The largest group is 65 to 74, with 75 patients. 75% of them have cancer, and 73% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.86, 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. Ng's median patient age at 72, with 50% women.
Dr. Ng's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Ng's Medicare patients by sex, 2024
- Women7143%
- Men9557%
Chronic conditions among Dr. Ng's Medicare patients, 2024
- Cancer75%
- High cholesterol73%
- High blood pressure71%
- Arthritis36%
- Chronic kidney disease36%
- Ischemic heart disease28%
- COPD27%
- Diabetes26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ng's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Lydia W. Ng wrote 112 Medicare Part D claims in 2024
In 2024, Dr. Ng wrote 112 Medicare Part D claims for 53 patients. 97% of them were for generic drugs. CMS names the drug for 33 of them, across 2 drugs with 11 or more claims each, at $294 in total drug cost. In 2023, CMS named 48 claims across 3 drugs.
Dr. Ng's Part D claims by kind of drug, 2024
- Generic109 claims97%
- Brand-name and other3 claims3%
Dr. Ng'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. Ng's Part D claims, 2024
- Opioids13%15 of 112 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: 482024: 3331%
Drugs named by CMS: 2 in 2024, 3 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
How Dr. Lydia W. Ng takes part in Medicare
Dr. Ng accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Lydia W. Ng received $17 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Ng from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Novocure Inc. paid the most, $17.
Companies that paid Dr. Ng the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Lydia W. Ng graduated from Harvard Medical School
Dr. Ng graduated from Harvard Medical School in 2012.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Lydia W. Ng'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) |
| 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. Lydia W. Ng
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. Lydia W. Ng's NPI number?
Dr. Lydia W. Ng's NPI number is 1174879076. It was assigned on July 28, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Lydia W. Ng?
Dr. Lydia W. Ng is a radiation oncologist in Rochester, Minnesota. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. Lydia W. Ng practice?
Dr. Ng practices at 200 First Street SW, Rochester, MN 55905. Dr. Ng's primary practice is Mayo Clinic Breast Diagnostic Clinic in Rochester, Minnesota. Dmand AI also links Dr. Ng to 1 hospital, 2 medical groups, 1 clinical lab and 1 hospice.
What is Dr. Lydia W. Ng's office phone number?
The practice phone on file for Dr. Ng is (507) 284-5968.
What is Dr. Lydia W. Ng's medical license number?
Dr. Ng holds Minnesota license 62447, one of the licenses on file in 3 states.
Which states has Dr. Lydia W. Ng been licensed in?
Dmand AI has state licenses on file for Dr. Ng in Minnesota, California and Massachusetts.
Which hospitals is Dr. Lydia W. Ng affiliated with?
Dr. Ng is affiliated with Mayo Clinic Health System in Mankato. Dmand AI links Dr. Ng to 1 more hospital.
What medical group is Dr. Lydia W. Ng part of?
Dr. Ng is linked to Mayo Clinic. Dmand AI links Dr. Ng to 2 more medical groups.
Does Dr. Lydia W. Ng accept Medicare?
Yes. CMS data shows Dr. Ng billed Medicare for 1,951 services in 2024, and Dr. Ng accepts Medicare assignment.
How many Medicare patients does Dr. Lydia W. Ng see?
CMS counts 166 Medicare patients who saw Dr. Ng in 2024, with an average age of 75.
Show 5 more questionsShow fewer questions
What services does Dr. Lydia W. Ng bill to Medicare?
In 2024, Dr. Ng's most billed Medicare services were medicare service (G6015), medicare service (G6002) and radiation oncology (77300).
Where did Dr. Lydia W. Ng go to medical school?
Dr. Ng graduated from Harvard Medical School in 2012.
What drugs does Dr. Lydia W. Ng prescribe most?
In 2024 Medicare Part D data, Dr. Ng's most prescribed drugs by claims were Tamsulosin HCl and Oxybutynin Chloride.
Has Dr. Lydia W. Ng received payments from drug or device companies?
CMS Open Payments shows $17 in general payments to Dr. Ng from 1 company from 2016 to 2016. The largest total came from Novocure Inc.
How long has Dr. Lydia W. Ng been practicing?
Dr. Ng graduated from medical school in 2012, 14 years ago.
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