Physician Profile
Unclaimed ProfileAbout ALLEN
Gary S. Allen, M.D. is a healthcare provider in Littleton, CO specialising in thoracic surgery. Gary trained at Albany Medical College of Union University, graduating in 1991. Gary is also listed as specialising in thoracic surgery (cardiothoracic).
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
Areas of Expertise
Common questions
What does Dr. Allen specialise in?
Dr. Allen is a thoracic surgeon in Littleton, CO. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “THORACIC SURGERY”.
NPI registry
Where is Dr. Allen located?
Dr. Allen is listed at 7780 S BROADWAY STE 170, Littleton, CO 80122. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Allen's phone number?
The number on file is (303) 269-2920. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Allen's NPI number?
Dr. Allen's National Provider Identifier is 1154327872. 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. Allen go to medical school?
Dr. Allen attended Albany Medical College of Union University, graduating in 1991. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Allen been practising?
Dr. Allen has 35 years experience. Calculated from a graduation year of 1991, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Allen do most often?
According to Medicare billing data, Dr. Allen performs procedures including coronary artery bypass using artery graft, 1 graft, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Allen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Allen. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (303) 269-2920
- Email not available
Practice Locations
7780 S BROADWAY STE 170
Littleton, CO 80122
Procedures Most Often Billed to Medicare
28 services · 28 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Coronary artery bypass using artery graft, 1 graft | Procedure | 33533 |
17 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
11 |
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 Albany Medical College of Union University 8
Other providers in the same specialty who trained at the same institution.
Class of 1991 at Albany Medical College of Union University 8
Providers who graduated from the same medical school in the same year.
More connections — 8 related providers in 1 group
Also performs Coronary artery bypass using artery graft, 1 graft 8
Providers in CO who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.