Physician Profile
Donald B. Longjohn, M.D.
Unclaimed ProfileAbout Dr. Longjohn
Based in Los Angeles, CA, Donald B. Longjohn, M.D. is listed in the NPI registry under orthopaedic adult reconstructive surgery. Donald graduated from University of Michigan Medical School in 1990. Donald is also listed as specializing in orthopaedic surgery. According to Medicare claims data, Donald cared for 811 Medicare patients across 957 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more, and aspiration and/or injection of fluid from large joint.
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
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
- (323) 442-5860
- Email not available
Practice Locations
1520 SAN PABLO ST #2000
Los Angeles, CA 90033
Procedures Most Often Billed to Medicare
957 services · 811 patients · 9 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
165 | More often than most peers in Orthopaedic Adult Reconstructive… |
| Replacement of knee joint, both sides of knee | Procedure | 27447 |
33 | Less often than most peers in Orthopaedic Adult Reconstructive… |
| Replacement of thigh bone and hip joint with prosthesis | Procedure | 27130 |
13 | Less often than most peers in Orthopaedic Adult Reconstructive… |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
331 | More often than most peers in Orthopaedic Adult Reconstructive… |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
179 | More than most peers in Orthopaedic Adult Reconstructive… |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
148 | More than most peers in Orthopaedic Adult Reconstructive… |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
52 | Less often than most peers in Orthopaedic Adult Reconstructive… |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
25 | Less often than most peers in Orthopaedic Adult Reconstructive… |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
11 | Less often than most peers in Orthopaedic Adult Reconstructive… |
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.
Other orthopaedic adult reconstructive surgeons in Los Angeles 8
Same specialty, same city.
Trained at University of Michigan Medical School 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1990 at University of Michigan Medical School 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 is Donald B. Longjohn's specialty?
Donald B. Longjohn is an orthopaedic adult reconstructive surgeon in Los Angeles, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Orthopaedic Adult Reconstructive Surgery”.
NPI registry
Where can I find Donald B. Longjohn?
Donald B. Longjohn is listed at 1520 San Pablo St #2000, Los Angeles, CA 90033. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Donald B. Longjohn?
The number on file is (323) 442-5860. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Donald B. Longjohn's NPI number?
Donald B. Longjohn's National Provider Identifier is 1215949524. 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 Donald B. Longjohn's education?
Donald B. Longjohn attended University of Michigan Medical School, graduating in 1990. This comes from the CMS National Downloadable File.
CMS public data
How long has Donald B. Longjohn been practicing?
Donald B. Longjohn has 36 years experience. Calculated from a graduation year of 1990, reported in the CMS National Downloadable File.
CMS public data
What is Donald B. Longjohn known for?
According to Medicare billing data, Donald B. Longjohn performs procedures including aspiration and/or injection of fluid from large joint, replacement of knee joint, both sides of knee and replacement of thigh bone and hip joint with prosthesis, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Donald B. Longjohn confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Donald B. Longjohn. 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.