Physician Profile
Unclaimed ProfileAbout NORTHROP
Gregory D Northrop, MD practices sports medicine in Pasadena, CA. Gregory is a 1998 graduate of Columbia University College of Physicians and Surgeons. Gregory is also listed as specializing in orthopaedic sports medicine and orthopaedic surgery. According to Medicare claims data, Gregory cared for 1,405 Medicare patients across 13,192 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
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (626) 797-2002
- Email not available
Practice Locations
2627 E WASHINGTON BLVD
Pasadena, CA 91107
Procedures Most Often Billed to Medicare
13,192 services · 1,405 patients · 15 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
312 |
| Replacement of knee joint, both sides of knee | Procedure | 27447 |
12 |
| Computer-assisted surgery for muscle and bone procedure | Procedure | 20985 |
12 |
| X-ray of knee, 1-2 views | Imaging | 73560 |
201 |
| X-ray of shoulder, minimum of 2 views | Imaging | 73030 |
177 |
| X-ray of both knees while standing | Imaging | 73565 |
126 |
| X-ray of knee, 3 views | Imaging | 73562 |
75 |
| X-ray of pelvis, 1-2 views | Imaging | 72170 |
13 |
| Injection, methylprednisolone acetate, 1 mg | Drug given | J1010 |
10,543 |
| Hyaluronan or derivative, synvisc or synvisc-one, for intra-articular injection, 1 mg | Drug given | J7325 |
1,008 |
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 5
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 sports medicines in Pasadena 3
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Columbia University College of Physicians and Surgeons 8
Other providers in the same specialty who trained at the same institution.
Class of 1998 at Columbia University College of Physicians and Surgeons 8
Providers who graduated from the same medical school in the same year.
Also performs Aspiration and/or injection of fluid from large joint 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Northrop?
Dr. Northrop is a sports medicine in Pasadena, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “SPORTS MEDICINE”.
NPI registry
What is Dr. Northrop's address?
Dr. Northrop is listed at 2627 E WASHINGTON BLVD, Pasadena, CA 91107. 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. Northrop?
The number on file is (626) 797-2002. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Northrop's NPI number?
Dr. Northrop's National Provider Identifier is 1962404582. 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. Northrop train?
Dr. Northrop attended Columbia University College of Physicians and Surgeons, graduating in 1998. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Northrop been practicing?
Dr. Northrop has 28 years experience. Calculated from a graduation year of 1998, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Northrop perform?
According to Medicare billing data, Dr. Northrop performs procedures including aspiration and/or injection of fluid from large joint, replacement of knee joint, both sides of knee and computer-assisted surgery for muscle and bone procedure; reads or performs imaging such as x-ray of knee, 1-2 views and x-ray of shoulder, minimum of 2 views, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Northrop confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Northrop. If this is you, claiming it is free.
Guide.md
Is this your profile?
Verify your identity to control how patients — and AI assistants — describe you.
Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.