PETER LEONG M.D.
NPI 1083634646
Anesthesiology - Pain Medicine in Portland, ME

NPI Status: Active since July 19, 2006

Contact Information

144 STATE ST
ANESTHESIA DEPARTMENT
PORTLAND, ME
ZIP 04101
Phone: (207) 879-3385

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  • Individual
  • Male
  • Anesthesiology
  • Pain Medicine
  • PECOS Enrolled

About PETER LEONG

This page provides the complete NPI Profile along with additional information for Peter Leong, a provider established in Portland, Maine with a medical specialization in Anesthesiology, focusing in pain medicine . The healthcare provider is registered in the NPI registry with number 1083634646 assigned on July 2006. The practitioner's primary taxonomy code is 207LP2900X with license number 012921 (ME). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1083634646
Provider Name
PETER LEONG M.D.
Gender
Male
Entity Type
Individual
Location Address
144 STATE ST ANESTHESIA DEPARTMENT PORTLAND, ME 04101
Location Phone
(207) 879-3385
Mailing Address
PO BOX 676 MAINE ANESTHESIOLOGY LEWISTON, ME 04243
Mailing Phone
(800) 720-1664
Is Sole Proprietor?
No
Enumeration Date
07-19-2006
Last Update Date
09-11-2025
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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

Anesthesiology Pain Medicine

Taxonomy Code
207LP2900X
Type
Allopathic & Osteopathic Physicians
License No.
012921
License State
ME
Taxonomy Description
An anesthesiologist who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic and/or cancer pain in both hospital and ambulatory settings. Patient care needs are also coordinated with other specialists.

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)
1207L00000XAllopathic & Osteopathic Physicians

Anesthesiology

012921 (ME)

Medicare Participation & PECOS Enrollment Status

Peter 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: 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

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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 1083634646, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

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
0
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
3
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
3
Unchanged
Pos 7
4
Doubled → 8
Pos 8
6
Unchanged
Pos 9
4
Doubled → 8
Check
6
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 8 → 16 → 7 6 → 12 → 3 4 → 8 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 1 + 6 + 3 + 1 + 2 + 3 + 8 + 6 + 8 + 24 = 64

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

The next multiple of ten after 64 is 70. The difference is the calculated check digit.

70 - 64 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1083634646.

Other Providers at the Same Location


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

Internal Medicine
144 STATE ST
PORTLAND, ME 04101
Radiology (Diagnostic Radiology)
144 STATE ST
PORTLAND, ME 04101
Radiology (Diagnostic Radiology)
144 STATE ST
PORTLAND, ME 04101
Radiology (Diagnostic Radiology)
144 STATE ST
PORTLAND, ME 04101
Radiology (Diagnostic Radiology)
144 STATE ST
PORTLAND, ME 04101
Internal Medicine (Infectious Disease)
144 STATE ST
PORTLAND, ME 04101
Family Medicine
144 STATE ST
PORTLAND, ME 04101
Physician Assistant
144 STATE ST
PORTLAND, ME 04101
Surgery
144 STATE ST
PORTLAND, ME 04101
Emergency Medicine
144 STATE ST
PORTLAND, ME 04101
Nurse Anesthetist, Certified Registered
144 STATE ST
PORTLAND, ME 04101
Emergency Medicine
144 STATE ST
PORTLAND, ME 04101
Psychiatry & Neurology (Neurology)
144 STATE ST
PORTLAND, ME 04101
Internal Medicine
144 STATE ST
PORTLAND, ME 04101
Physician Assistant
144 STATE ST
PORTLAND, ME 04101
Physician Assistant
144 STATE ST
PORTLAND, ME 04101
Physician Assistant
144 STATE ST
PORTLAND, ME 04101
Nurse Practitioner (Psychiatric/Mental Health)
144 STATE ST
PORTLAND, ME 04101
Nurse Anesthetist, Certified Registered
144 STATE ST
PORTLAND, ME 04101
Nurse Anesthetist, Certified Registered
144 STATE ST
PORTLAND, ME 04101

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1083634646, enumerated as an "individual" on July 19, 2006.

The provider is located at 144 STATE ST ANESTHESIA DEPARTMENT PORTLAND, ME 04101 and the phone number is (207) 879-3385.

Anesthesiology with taxonomy code 207LP2900X and a focus in Pain Medicine.