Physician Profile
Glenn Geoffrey Preston, M.D.
Unclaimed ProfileAbout Dr. Preston
Glenn Geoffrey Preston, M.D. is a healthcare provider in Spencer, IA specializing in medical oncology. Glenn trained at University of Missouri, Columbia School of Medicine, graduating in 1995. Glenn is also listed as specializing in hematology & oncology. Medicare claims data shows Glenn provided 989 services to 370 patients.
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
- (712) 264-6550
- Email not available
Practice Locations
1200 1ST AVE E ABBEN CANCER CENTER
Spencer, IA 51301
Conditions Commonly Evaluated or Treated
Within Medical 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
989 services · 370 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
886 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
103 |
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.
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.
Trained at University of Missouri, Columbia School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1995 at University of Missouri, Columbia School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Dr. Preston specialize in?
Dr. Preston is a medical oncology in Spencer, IA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “MEDICAL ONCOLOGY”.
NPI registry
Where is Dr. Preston located?
Dr. Preston is listed at 1200 1ST AVE E ABBEN CANCER CENTER, Spencer, IA 51301. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Preston's phone number?
The number on file is (712) 264-6550. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Preston?
Dr. Preston's National Provider Identifier is 1194796243. 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. Preston go to medical school?
Dr. Preston attended University of Missouri, Columbia School of Medicine, graduating in 1995. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Preston have?
Dr. Preston has 31 years experience. Calculated from a graduation year of 1995, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Preston do most often?
According to Medicare billing data, Dr. Preston the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Preston's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Preston. 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.