DR. LARRY MARC GERSTEN M.D.
NPI 1417950064
Orthopaedic Surgery - Adult Reconstructive Orthopaedic Surgery in Laguna Woods, CA

NPI Status: Active since May 27, 2005

Contact Information

24331 EL TORO RD STE 200
LAGUNA WOODS, CA
ZIP 92637
Phone: (949) 586-3200
Fax: (949) 900-2116

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  • Individual
  • Male
  • Orthopaedic Surgery
  • Adult Reconstructive Orthopaedic Surgery
  • PECOS Enrolled

About LARRY GERSTEN

This page provides the complete NPI Profile along with additional information for Larry Gersten, a provider established in Laguna Woods, California with a medical specialization in Orthopaedic Surgery, focusing in adult reconstructive orthopaedic surgery . The healthcare provider is registered in the NPI registry with number 1417950064 assigned on May 2005. The practitioner's primary taxonomy code is 207XS0114X with license number G50397 (CA). The provider is registered as an individual and his NPI record was last updated 6 years ago.

NPI
1417950064
Provider Name
DR. LARRY MARC GERSTEN M.D.
Gender
Male
Entity Type
Individual
Location Address
24331 EL TORO RD STE 200 LAGUNA WOODS, CA 92637
Location Phone
(949) 586-3200
Location Fax
(949) 900-2116
Mailing Address
24331 EL TORO RD STE 200 LAGUNA WOODS, CA 92637
Mailing Phone
(949) 586-3200
Mailing Fax
(949) 900-2116
Is Sole Proprietor?
No
Enumeration Date
05-27-2005
Last Update Date
06-19-2020
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Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Orthopaedic Surgery Adult Reconstructive Orthopaedic Surgery

Taxonomy Code
207XS0114X
Type
Allopathic & Osteopathic Physicians
License No.
G50397
License State
CA
Taxonomy Description
Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, adult reconstructive orthopaedic surgeons deal with reconstructive procedures such as joint arthroplasty (i.e., hip and knee), osteotomy, arthroscopy, soft-tissue reconstruction, and a variety of other adult reconstructive surgical procedures.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
RR2000 19525OTHER (01)CAMEDICARE RAILROAD
00G503970MEDICAID (05)CA 
00G503970G89OTHER (01)CACAL-OPTIMA

Medicare Participation & PECOS Enrollment Status

Larry Gersten is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Reviews for DR. LARRY MARC GERSTEN M.D.

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1417950064, we treat the final digit (4) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 56. The final step is to find the difference between that total and the next multiple of ten (60 - 56 = 4).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
4
Unchanged
Pos 3
1
Doubled → 2
Pos 4
7
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
5
Unchanged
Pos 7
0
Doubled → 0
Pos 8
0
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
4
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 1 → 2 9 → 18 → 9 0 → 0 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 4 + 2 + 7 + 1 + 8 + 5 + 0 + 0 + 1 + 2 + 24 = 56

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 56 is 60. The difference is the calculated check digit.

60 - 56 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1417950064.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Technician/Technologist
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637
Physician Assistant
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637
Specialist/Technologist, Other (Orthopedic Assistant)
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637
Specialist/Technologist, Other (Orthopedic Assistant)
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637
Specialist/Technologist, Other (Orthopedic Assistant)
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637
Orthopaedic Surgery (Adult Reconstructive Orthopaedic Surgery)
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637
Technician/Technologist (Orthoptist)
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637
Technician/Technologist (Orthoptist)
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637
Physician Assistant
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637
Orthopaedic Surgery (Hand Surgery)
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637
Orthopaedic Surgery (Orthopaedic Trauma)
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637
Orthopaedic Surgery (Hand Surgery)
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637
Orthopaedic Surgery (Adult Reconstructive Orthopaedic Surgery)
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637
Physician Assistant
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637
Orthopaedic Surgery
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637
Physical Therapist (Hand)
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637
Durable Medical Equipment & Medical Supplies
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637
Physical Therapist
24331 EL TORO RD STE 200
LAGUNA HILLS, CA 92637
Radiologic Technologist (Magnetic Resonance Imaging)
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637
Physician Assistant (Medical)
24331 EL TORO RD STE 200
LAGUNA WOODS, CA 92637

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1417950064, enumerated as an "individual" on May 27, 2005.

The provider is located at 24331 EL TORO RD STE 200 LAGUNA WOODS, CA 92637 and the phone number is (949) 586-3200.

Orthopaedic Surgery with taxonomy code 207XS0114X and a focus in Adult Reconstructive Orthopaedic Surgery.

The provider might be accepting Accepts: Railroad Medicare, Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.