DR. CRAIG JANN LEONG M.D.
NPI 1639103344
Ophthalmology - Retina Specialist in Walnut Creek, CA

NPI Status: Active since July 10, 2006

Contact Information

365 LENNON LN STE 250
WALNUT CREEK, CA
ZIP 94598
Phone: (925) 943-6800
Fax: (925) 943-6880

NPI Profile Information
Primary Taxonomy
Secondary Taxonomies
Insurance Plans Accepted
Secondary Locations
Medicare Participation & PECOS Status
Physician Visit Costs
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Ophthalmology
Retina Specialist
PECOS Enrolled

About CRAIG LEONG

This page provides the complete NPI Profile along with additional information for Craig Leong, a provider established in Walnut Creek, California with a medical specialization in Ophthalmology, focusing in retina specialist . The healthcare provider is registered in the NPI registry with number 1639103344 assigned on July 2006. The practitioner's primary taxonomy code is 207WX0107X with license number G28041 (CA). The provider is registered as an individual and his NPI record was last updated 4 years ago.

NPI: 1639103344
Provider Name: DR. CRAIG JANN LEONG M.D.
Gender: Male
Entity Type: Individual
Location Address: 365 LENNON LN STE 250 WALNUT CREEK, CA 94598
Location Phone: (925) 943-6800
Location Fax: (925) 943-6880
Mailing Address: 365 LENNON LN STE 250 WALNUT CREEK, CA 94598
Mailing Phone: (925) 943-6800
Mailing Fax: (925) 943-6880
Is Sole Proprietor?: No
Enumeration Date: 07-10-2006
Last Update Date: 04-29-2021
Code Navigator

Location Map

Secondary Locations

20130 Lake Chabot Rd Ste 303
Castro Valley, CA 94546
(510) 733-1888
5980 Stoneridge Dr Ste 117
Pleasanton, CA 94588
(925) 463-8200

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: Ophthalmology Retina Specialist
Taxonomy Code: 207WX0107X
Type: Allopathic & Osteopathic Physicians
License No.: G28041
License State: CA
Taxonomy Description: An ophthalmologist who specializes in the diagnosis and treatment of vitreoretinal diseases.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No.	Taxonomy Code	Type	Classification / Specialization	License No. (State)
1	207W00000X	Allopathic & Osteopathic Physicians	Ophthalmology	G28041 (CA)

Insurance Plans Accepted

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

Medicare

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

Medicaid

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
00G280410	MEDICAID (05)	CA

Medicare Participation & PECOS Enrollment Status

Craig Leong 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: Durable Medical Equipment (DME) 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: No
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): No
Eligible to Order or Refer Power Mobility Devices: Yes

Physician Visit Costs

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 94598 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

Average New Patient Price $153.83
Minimum New Patient Price $69
Maximum New Patient Price $202.35

Average New Patient Copayment $38.45
Minimum New Patient Copayment $17.25
Maximum New Patient Copayment $50.58

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99213

Average Established Patient Price $84.91
Minimum Established Patient Price $23.44
Maximum Established Patient Price $166.46

Average Established Patient Copayment $21.22
Minimum Established Patient Copayment $5.86
Maximum Established Patient Copayment $41.61

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

NPI Validation Check Digit Calculation

The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.

Start with the original NPI number, the last digit is the check digit and is not used in the calculation.
1	6	3	9	1	0	3	3	4	4
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
2	6	6	9	2	0	6	3	8
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 6 + 6 + 9 + 2 + 0 + 6 + 3 + 8 + 24 = 66
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
70 - 66 = 4									4

The NPI number 1639103344 is valid because the calculated check digit 4 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location

The following 8 providers are registered at the same or nearby location.

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SUITE 250
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ZIP 94598

(925) 932-6330

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DR. SUBHRANSU KUMAR RAY M.D., PH.D.

Ophthalmology

(Retina Specialist)