Physician Profile
Unclaimed ProfileAbout KLEIN
William P Klein, MD practises internal medicine in Newport Beach, CA. William is a 1966 graduate of State University of New York Downstate Medical Center.
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 kind of doctor is Dr. Klein?
Dr. Klein is an internal medicine in Newport Beach, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
What is Dr. Klein's address?
Dr. Klein is listed at 1501 SUPERIOR AVE #111, Newport Beach, CA 92663. 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. Klein?
The number on file is (949) 274-8030. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Klein?
Dr. Klein's National Provider Identifier is 1205834819. 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. Klein train?
Dr. Klein attended State University of New York Downstate Medical Center, graduating in 1966. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Klein have?
Dr. Klein has 60 years experience. Calculated from a graduation year of 1966, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Klein perform?
According to Medicare billing data, Dr. Klein provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and test to measure expiratory airflow and volume, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Klein's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Klein. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (949) 274-8030
- Email not available
Practice Locations
1501 SUPERIOR AVE #111
Newport Beach, CA 92663
Procedures Most Often Billed to Medicare
1,498 services · 1,001 patients · 8 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
144 |
| Test to measure expiratory airflow and volume | Treatment | 94010 |
134 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
706 |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
225 |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
212 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
37 |
| Transitional care management services for problem of high complexity | Office visit | 99496 |
22 |
| Colorectal cancer screening; fecal occult blood test, immunoassay, 1-3 simultaneous | Billing code | G0328 |
18 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internal medicines at this location 3
Same specialty, same street address — most likely the same department or group.
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.
More connections — 29 related providers in 4 groups
Other internal medicines in Newport Beach 8
Same specialty, same city.
Trained at State University of New York Downstate Medical Center 8
Other providers in the same specialty who trained at the same institution.
Class of 1966 at State University of New York Downstate Medical Center 5
Providers who graduated from the same medical school in the same year.
Also performs Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 8
Providers in CA 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.