MR. GREG J. NELSON M.D.
NPI 1558496950
Specialist in Van Nuys, CA

Q: What is Greg Nelson's NPI number?

The NPI number for Greg Nelson is 1558496950. It was assigned to this individual provider in the NPPES registry on February 23, 2007.

Q: What is Greg Nelson's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Q: When was this NPI record last updated?

The NPPES record for Greg Nelson was last updated on July 9, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since February 23, 2007PECOS EnrolledAccepts Medicare AssignmentCLIA 05D0873082 · Certificate of Compliance

84.37/100

CMS Quality Rating

15243 VANOWEN ST, SUITE 212, VAN NUYS, CA 91405(818) 785-8707(818) 785-1152 Get Directions Write a Review

NPPES record last updated: July 9, 2007. Verified against the NPPES registry weekly; last sync: September 06, 2026.

On this page

About Mr. Greg J. Nelson M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MR. GREG J. NELSON M.D. (NPI 1558496950) is an individual specialist in Van Nuys, California, licensed in California (G67260) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS, holds a CLIA Certificate of Compliance certificate valid through July 13, 2027, and is a graduate of University Of California, Geffen School Of Medicine (1988).

NPPES Registry Identity

NPI1558496950

Entity TypeIndividualMale

Primary Taxonomy174400000X

Provider Legal NameMR. GREG J. NELSONCredential: M.D.

Location Address15243 VANOWEN ST, SUITE 212Van Nuys, CA 91405-3605

Mailing AddressPo Box 55637Sherman Oaks, CA 91413-0637 · (818) 785-8707 · Fax (818) 785-1152

Phone(818) 785-8707

Fax(818) 785-1152

Sole ProprietorNo

Medical School CMSUniversity Of California, Geffen School Of MedicineGraduated 1988

Enumeration DateFebruary 23, 2007

Last NPPES UpdateJuly 9, 2007

✔ NPI 1558496950 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

License✔ Licensed in CA · G67260

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

15243 VANOWEN ST, Van Nuys, CA 91405

Open in Google Maps ↗

Other Identifiers 2

Medicare ID-Type UnspecifiedW15495CA · Medicare Provider Id

Medicare UPINF10266CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mr. Greg J. Nelson M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID941276521

PECOS Enrollment IDI20040903001160

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Compliance 05D0873082

Greg J Nelson MD · Van Nuys, CA

Active · expires Jul 13, 2027

CLIA Number05D0873082

Laboratory TypePhysician Office

Certificate Effective DateJuly 14, 2025

Certificate Expiration DateJuly 13, 2027

Laboratory DirectorGreg J. Nelson MD

Laboratory Phone(818) 785-8707

Laboratory LocationGreg J Nelson MD15243 Vanowen St, Ste 212, Van Nuys, CA 91405

CLIA data matches this NPI record on: Address Phone

This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.

Areas of Expertise CMS Part B claims 20

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Pathology examination of tissue using a microscope, intermediate complexity 88305

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

952 services230 patients

Destruction of precancer skin growth, 2-14 growths 17003

This procedure involves removing 2-14 precancerous skin growths. The growths are treated to prevent them from potentially developing into skin cancer. The process is safe, with minimal discomfort, and promotes healthier skin.

635 services113 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

485 services330 patients

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

427 services51 patients

Biopsy of related skin growth, first growth 11102

A biopsy of a skin growth involves taking a small sample of the growth to examine it under a microscope. This helps determine if the growth is harmful. The procedure is typically quick, with minimal discomfort. It's a crucial step in ensuring your skin's health.

251 services209 patients

Destruction of precancer skin growth, 1 growth 17000

"Destruction of precancer skin growth" is a procedure that eliminates a single precancerous skin growth. This is done to prevent it from developing into skin cancer. The growth may be removed using various methods such as cryotherapy (freezing), laser therapy, or topical medications.

236 services174 patients

Biopsy of related skin growth, each additional growth 11103

A biopsy of related skin growth is a procedure where a small piece of skin growth is removed for testing. If additional growths are identified, they may also be biopsied. This helps in diagnosing skin conditions and planning appropriate treatment.

133 services71 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

118 services118 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

102 services81 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

77 services61 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

69 services49 patients

Destruction of skin growth, 1-14 growths 17110

"Destruction of skin growth" refers to a procedure where 1-14 abnormal skin growths are removed. This is done using methods such as freezing, burning, or laser therapy. It helps prevent the growth from causing discomfort or turning into a more serious condition.

66 services62 patients

Destruction of precancer skin growth, 15 or more growths 17004

This procedure involves removing 15 or more precancerous skin growths to prevent them from developing into cancer. It's done using various methods like freezing, creams, or minor surgery. The goal is to protect your health by stopping cancer before it starts.

35 services29 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

27 services27 patients

Shaving of skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm 11312

This procedure involves the careful removal of a skin growth on the face, ears, eyelids, nose, lips, or mouth. The growth being treated is between 1.1 and 2.0 cm in size. The process is typically quick, with minimal discomfort, and aids in maintaining skin health.

24 services22 patients

Tissue fungi or parasites 87220

Tissue fungi or parasites refer to microorganisms that can infect various parts of the body. This may cause symptoms like fatigue, fever, and skin changes. Diagnosis involves testing samples from the affected area. Treatment often includes medication to eliminate the infection.

23 services20 patients

Injection into skin growth, 1-7 growths 11900

This procedure involves injecting medication into 1-7 skin growths. The medication helps to reduce the size of the growths or completely eliminate them. It's a simple, quick, and usually painless process performed by a medical professional.

21 services19 patients

Complicated or multiple drainage of skin abscess 10061

This procedure involves draining one or more skin abscesses, which are pockets of pus that form due to an infection. The process includes making a small cut on the abscess, removing the pus, and cleaning the area to promote healing and prevent further infection.

17 services16 patients

Shaving of skin growth of body, arms, or legs, 1.1-2.0 cm 11302

This procedure involves the careful removal of a skin growth on your body, arms, or legs. The growth is between 1.1 and 2.0 cm. A special tool is used to shave off the growth, which is a quick and relatively painless process.

16 services15 patients

Shaving of skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm 11307

This procedure involves the careful removal of a skin growth between 1.1 to 2.0 cm in size. The growth could be located on the scalp, neck, hands, or feet. The process is done using a sharp instrument to shave off the growth, promoting healthier skin.

13 services12 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

84.37/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Individually scored

Quality

53.33

Improvement Activities

Reported Quality Measures

Documentation of Current Medications in the Medical Record

100%2,019 patients5/55-star benchmark: 100%

Functional Outcome Assessment

100%2,011 patients5/55-star benchmark: 100%

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. MITCHELL NISHIMOTO M.D.

Internal Medicine

15243 VANOWEN ST, SUITE 406
VAN NUYS, CA 91405

Los Angeles County (818) 785-3889

KYU HYUN KIM MD

Pediatrics

15243 VANOWEN ST, SUITE 300
VAN NUYS, CA 91405

Los Angeles County (818) 786-4910

DR. TIMOTHY MESS M.D.

Internal Medicine (Infectious Disease)

15243 VANOWEN ST, SUITE 406
VAN NUYS, CA 91405

Los Angeles County (818) 782-5450

CHARLES E WEIDMANN MD A PROFESSIONAL MEDICAL CORPORATION

Internal Medicine (Rheumatology)

15243 VANOWEN ST, STE 306
VAN NUYS, CA 91405

Los Angeles County (818) 781-0232

COWDREY'S VANOWEN TOWER PHARMACY, INC

Pharmacy (Community/Retail Pharmacy)

15243 VANOWEN ST, SUITE 100
VAN NUYS, CA 91405

Los Angeles County (818) 781-0111

KYU HYUN KIM MD INC

Pediatrics

15243 VANOWEN ST, SUITE 300
VAN NUYS, CA 91405

Los Angeles County (818) 786-4910

JADE T. ONG DDS. INC.

Dentist (General Practice)

15243 VANOWEN ST, SUITE 404
VAN NUYS, CA 91405

Los Angeles County (818) 908-1175

DR. MEE SOOK KIM M.D.

Obstetrics & Gynecology

15243 VANOWEN ST, SUITE 504
VAN NUYS, CA 91405

Los Angeles County (818) 781-8972

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Greg Nelson's NPI number?

The NPI number for Greg Nelson is 1558496950. It was assigned to this individual provider in the NPPES registry on February 23, 2007.

Where is Greg Nelson located?

Greg Nelson practices at 15243 Vanowen St Suite 212, Van Nuys, CA 91405. The listed phone number is (818) 785-8707.

What is Greg Nelson's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Greg Nelson enrolled in Medicare?

Yes. Greg Nelson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Does Greg Nelson hold a CLIA laboratory certificate?

Yes. A Certificate of Compliance (number 05D0873082) is associated with this NPI, valid through July 13, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Greg Nelson was last updated on July 9, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.