Physician Profile
Spyridon A. Mastroyannis, MD
Unclaimed ProfileAbout Dr. Mastroyannis
Spyridon A. Mastroyannis, MD practices gynecologic oncology in Aurora, CO. Spyridon is a 2015 graduate of George Washington University School of Medicine. According to Medicare claims data, Spyridon cared for 209 Medicare patients across 229 services. The services billed most often include visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient', new patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more, and established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (303) 724-2066
- Email not available
Practice Locations
1665 AURORA CT
Aurora, CO 80045
777 Bannock St
Denver, CO 80204
Procedures Most Often Billed to Medicare
229 services · 209 patients · 11 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of uterus, tubes, and/or ovaries through abdomen using an endoscope, 250.0 g or less | Procedure | 58571 |
14 | Less often than most peers in Gynecologic Oncology |
| Imaging of lymph nodes during surgery | Procedure | 38900 |
11 | Less often than most peers in Gynecologic Oncology |
| Biopsy and removal of lymph nodes of abdominal cavity using an endoscope | Procedure | 38570 |
11 | Less often than most peers in Gynecologic Oncology |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
37 | Less often than most peers in Gynecologic Oncology |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
35 | More often than most peers in Gynecologic Oncology |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
32 | As often as other peers in Gynecologic Oncology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
27 | Less often than most peers in Gynecologic Oncology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
18 | Less often than most peers in Gynecologic Oncology |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
16 | As often as other peers in Gynecologic Oncology |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
16 | More often than most peers in Gynecologic Oncology |
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.
Other gynecologic oncology specialists at this location 2
Same specialty, same street address — most likely the same department or group.
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 gynecologic oncology specialists in Aurora 6
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at George Washington University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2015 at George Washington University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of uterus, tubes, and/or ovaries through abdomen using an endoscope, 250.0 g or less 8
Providers in CO who bill this service to Medicare most often.
Common questions
What is Dr. Mastroyannis's specialty?
Dr. Mastroyannis is a gynecologic oncology in Aurora, CO. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Dr. Mastroyannis?
Dr. Mastroyannis is listed at 1665 Aurora CT, Aurora, CO 80045. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Mastroyannis?
The number on file is (303) 724-2066. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Mastroyannis's NPI number?
Dr. Mastroyannis's National Provider Identifier is 1700272986. 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
What is Dr. Mastroyannis's medical education?
Dr. Mastroyannis attended George Washington University School of Medicine, graduating in 2015. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Mastroyannis been practicing?
Dr. Mastroyannis has 11 years experience. Calculated from a graduation year of 2015, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Mastroyannis known for?
According to Medicare billing data, Dr. Mastroyannis performs procedures including removal of uterus, tubes, and/or ovaries through abdomen using an endoscope, 250.0 g or less, imaging of lymph nodes during surgery and biopsy and removal of lymph nodes of abdominal cavity using an endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Mastroyannis confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Mastroyannis. 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.