Doctor profile · Federal record

Dr. Lydia Ng, M.D.

Radiation Oncology Physician (CMS: Radiation Oncology) · Internal Medicine Physician · Radiation Oncology Physician · Rochester, MN

  • NPI 1174879076
  • Accepts Medicare
  • 14 yrs in practice
  • Licensed in 3 states
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
200 1St St Sw
Rochester, MN 559055000
(507) 284-2511
Additional location
1100 N State St
Los Angeles, CA 900335000
(323) 409-5019
Mailing address
200 1St Street Sw
Rochester, MN 55905

Credentials & registration

NPPES · NUCC
NPI registered
July 2012 — 14 yrs on file
Profile last updated
August 19, 2020
Year of graduation
2012 — 14 yrs since
Specialty taxonomy
2085R0001X — NUCC code
State licenses (3)
Minnesota #62447 · Massachusetts #251838 · California #A129905

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1174879076. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
2,838
Distinct HCPCS
10
Medicare allowed
$643,170
HCPCS Description Services Patients Avg allowed
G6002 Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy 841 129 $33
G6015 Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session 731 99 $372
G6012 Radiation treatment delivery,3 or more separate treatment areas, custom blocking, tangential ports, wedges, rotational beam, compensators, electron beam; 6-10 mev 205 47 $243
77300 Calculation of radiation therapy dose 203 66 $67
77336 Continuing radiation therapy consultation per week 198 75 $87
77427 Radiation treatment management, 5 treatment sessions 192 67 $189
77334 Design and construction of complex radiation treatment device 145 58 $127
77263 Complex radiation therapy planning 66 62 $166
77301 High precision radiation therapy planning 46 41 $1,881
77338 Design and construction of radiation treatment device for high precision radiation therapy 46 41 $471

In context: peer comparison

Among 31 peers in Rochester Radiation Oncology Physician, average services per provider: 108. This provider delivers 26× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
48
Patients
11
Total drug cost
$882
Drug Type Claims Patients Total cost
Tamsulosin Hcl Generic 26 11 $494
Dexamethasone Generic 11 0 $189
Oxybutynin Chloride Generic 11 0 $200

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Lydia Ng's medical specialty?
Dr. Lydia Ng practices Radiation Oncology Physician in Rochester, MN.
Where does Dr. Lydia Ng practice?
Dr. Lydia Ng practices at 200 1St St Sw, Rochester, MN 559055000. Office phone: 5072842511.
What is Dr. Lydia Ng's NPI?
Dr. Lydia Ng's National Provider Identifier (NPI) is 1174879076, issued by NPPES.
Does Dr. Lydia Ng accept Medicare assignment?
Yes. Dr. Lydia Ng accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Lydia Ng commonly perform?
Top Medicare-reported procedures in 2023: Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (HCPCS G6002); Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc (HCPCS G6015); Radiation treatment delivery,3 or more separate treatment areas, custom blocking, tangential ports, wedges, rotational beam, compensators, electron beam; 6-10 mev (HCPCS G6012). Source: CMS Medicare Physician & Other Practitioners file.