Physician Profile
Marc Posner, M.D.
Unclaimed ProfileAbout Dr. Posner
Marc Posner, M.D. practices radiation oncology in Lake Forest, IL. Marc is a 1995 graduate of Harvard Medical School. According to Medicare claims data, Marc cared for 1,150 Medicare patients across 3,167 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (847) 535-6135
- Email not available
Practice Locations
660 N WESTMORELAND RD
Lake Forest, IL 60045
Conditions Commonly Evaluated or Treated
Within Radiation Oncology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Procedures & services
Most searched procedures
Procedures Most Often Billed to Medicare
3,167 services · 1,150 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Ct guidance for insertion of radiation therapy fields | Imaging | 77014 |
366 |
| Radiation treatment management, 5 treatment sessions | Imaging | 77427 |
281 |
| Ct guidance for insertion of radiation therapy fields | Imaging | 77014 |
233 |
| Design and construction of complex radiation treatment device | Imaging | 77334 |
225 |
| Calculation of radiation therapy dose | Imaging | 77300 |
181 |
| Radiation treatment management, 5 treatment sessions | Imaging | 77427 |
165 |
| Complex radiation therapy planning | Imaging | 77263 |
145 |
| Calculation of radiation therapy dose | Imaging | 77300 |
116 |
| Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved | Imaging | 77290 |
90 |
| Design and construction of complex radiation treatment device | Imaging | 77334 |
77 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other radiation oncology specialists in Lake Forest 1
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Harvard Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 1995 at Harvard Medical School 8
Providers who graduated from the same medical school in the same year.
Also performs Ct guidance for insertion of radiation therapy fields 8
Providers in IL who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Posner?
Dr. Posner is a radiation oncology in Lake Forest, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “RADIATION ONCOLOGY”.
NPI registry
What is Dr. Posner's address?
Dr. Posner is listed at 660 N WESTMORELAND RD, Lake Forest, IL 60045. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Posner?
The number on file is (847) 535-6135. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Posner's NPI number?
Dr. Posner's National Provider Identifier is 1871569574. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Posner train?
Dr. Posner attended Harvard Medical School, graduating in 1995. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Posner been practicing?
Dr. Posner has 31 years experience. Calculated from a graduation year of 1995, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Posner perform?
According to Medicare billing data, Dr. Posner performs imaging including ct guidance for insertion of radiation therapy fields and radiation treatment management, 5 treatment sessions, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Posner confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Posner. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.