DR. CHRISTOPHER HARLOW LADD DO
NPI 1073197737
Anesthesiology - Pain Medicine in Redwood City, CA

NPI Status: Active since May 10, 2021

Contact Information

450 BROADWAY ST
REDWOOD CITY, CA
ZIP 94063
Phone: (650) 723-6316

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

About CHRISTOPHER LADD

This page provides the complete NPI Profile along with additional information for Christopher Ladd, a provider established in Redwood City, California with a medical specialization in Anesthesiology, focusing in pain medicine . The healthcare provider is registered in the NPI registry with number 1073197737 assigned on May 2021. The practitioner's primary taxonomy code is 207LP2900X with license number 20A24360 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1073197737
Provider Name
DR. CHRISTOPHER HARLOW LADD DO
Gender
Male
Entity Type
Individual
Location Address
450 BROADWAY ST REDWOOD CITY, CA 94063
Location Phone
(650) 723-6316
Mailing Address
450 BROADWAY ST REDWOOD CITY, CA 94063
Mailing Phone
(650) 723-6316
Is Sole Proprietor?
No
Enumeration Date
05-10-2021
Last Update Date
11-09-2025
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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.
20A24360
License State
CA
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

U07847 (FL)
2207L00000XAllopathic & Osteopathic Physicians

Anesthesiology

OS20484 (FL)

Medicare Participation & PECOS Enrollment Status

Christopher Ladd 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. CHRISTOPHER HARLOW LADD DO

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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 1073197737, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).

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
7
Doubled → 14 → 1 + 4
Pos 4
3
Unchanged
Pos 5
1
Doubled → 2
Pos 6
9
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
7
Unchanged
Pos 9
3
Doubled → 6
Check
7
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 7 → 14 → 5 1 → 2 7 → 14 → 5 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 1 + 4 + 3 + 2 + 9 + 1 + 4 + 7 + 6 + 24 = 63

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

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1073197737.

Other Providers at the Same Location


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

Orthopaedic Surgery
450 BROADWAY ST, MAILCODE 6342
REDWOOD CITY, CA 94063
Physician Assistant
450 BROADWAY ST, PAVILION A, 2ND FLOOR
REDWOOD CITY, CA 94063
Psychologist
450 BROADWAY ST, PAVILION A, MC 5340
REDWOOD CITY, CA 94063
Occupational Therapist (Hand)
450 BROADWAY ST, PAVILION A, 2ND FLOOR
REDWOOD CITY, CA 94063
Pediatrics
450 BROADWAY ST, MAIL CODE 5704
REDWOOD CITY, CA 94063
Physician Assistant
450 BROADWAY ST, PAVILLION A (MC6110)
REDWOOD CITY, CA 94063
Physical Medicine & Rehabilitation
450 BROADWAY ST, MC 6342
REDWOOD CITY, CA 94063
Nurse Practitioner
450 BROADWAY ST, PAVILION A
REDWOOD CITY, CA 94063
General Acute Care Hospital
450 BROADWAY ST, PAVILION C, MC 6342
REDWOOD CITY, CA 94063
Physician Assistant (Medical)
450 BROADWAY ST, PAVILION A, 1ST FLOOR
REDWOOD CITY, CA 94063
Orthopaedic Surgery
450 BROADWAY ST, MAILCODE 6342
REDWOOD CITY, CA 94063
Nurse Practitioner
450 BROADWAY ST, PAVILION A, MC 6110
REDWOOD CITY, CA 94063
Anesthesiology (Pain Medicine)
450 BROADWAY ST
REDWOOD CITY, CA 94063
Dermatology
450 BROADWAY ST, STANFORD DEPT OF DERMATOLOGY, PAVILION C, 2ND FLOOR
REDWOOD CITY, CA 94063
Orthopaedic Surgery
450 BROADWAY ST, PAVILION A, 2ND FLOOR
REDWOOD CITY, CA 94063
Anesthesiology
450 BROADWAY ST, PAVILION A 1ST FLOOR MC 5340
REDWOOD CITY, CA 94063
Special Hospital
450 BROADWAY ST, STANFORD UNIVERSITY DEPT OF ORTHOPAEDIC SURGERY
REDWOOD CITY, CA 94063
Nurse Practitioner
450 BROADWAY ST
REDWOOD CITY, CA 94063
Student in an Organized Health Care Education/Training Program
450 BROADWAY ST, (MC 5340)
REDWOOD CITY, CA 94063
Orthopaedic Surgery
450 BROADWAY ST, PAVILION C, MC 6342
REDWOOD CITY, CA 94063

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1073197737, enumerated as an "individual" on May 10, 2021.

The provider is located at 450 BROADWAY ST REDWOOD CITY, CA 94063 and the phone number is (650) 723-6316.

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