DR. JOHN ALEXANDER FREEMAN D.D.S., M.S.D.
NPI 1588830269
Dentist - Orthodontics and Dentofacial Orthopedics in San Luis Obispo, CA

NPI Status: Active since May 02, 2008

Contact Information

1288 MORRO ST
SUITE #110
SAN LUIS OBISPO, CA
ZIP 93401
Phone: (805) 547-7080
Fax: (805) 547-7084

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NPPES record last updated: May 2, 2008. Verified against the NPPES registry weekly; last sync: July 12, 2026.

  • Individual
  • Male
  • Dentist
  • Orthodontics and Dentofacial Orthopedics

About JOHN FREEMAN

This page provides the complete NPI Profile along with additional information for John Freeman, a provider established in San Luis Obispo, California with a medical specialization in Dentist, focusing in orthodontics and dentofacial orthopedics . The healthcare provider is registered in the NPI registry with number 1588830269 assigned on May 2008. The practitioner's primary taxonomy code is 1223X0400X with license number 42312 (CA). The provider is registered as an individual and his NPI record was last updated 18 years ago.

NPI
1588830269
Provider Name
DR. JOHN ALEXANDER FREEMAN D.D.S., M.S.D.
Gender
Male
Entity Type
Individual
Location Address
1288 MORRO ST SUITE #110 SAN LUIS OBISPO, CA 93401
Location Phone
(805) 547-7080
Location Fax
(805) 547-7084
Mailing Address
1288 MORRO ST SUITE #110 SAN LUIS OBISPO, CA 93401
Mailing Phone
(805) 547-7080
Mailing Fax
(805) 547-7084
Is Sole Proprietor?
Yes
Enumeration Date
05-02-2008
Last Update Date
05-02-2008
Code Navigator

A dentist like John Freeman is a skilled in and licensed provider that diagnoses and treats problems with patients teeth, gums, and related parts of the mouth. Dentists educate patients on how to take care of the teeth and gums and provide information on diet choices that affect oral health. Dentists must be licensed in the state in which they work.

Location Map

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

Dentist Orthodontics and Dentofacial Orthopedics

Taxonomy Code
1223X0400X
Type
Dental Providers
License No.
42312
License State
CA
Taxonomy Description
That area of dentistry concerned with the supervision, guidance and correction of the growing or mature dentofacial structures, including those conditions that require movement of teeth or correction of malrelationships and malformations of their related structures and the adjustment of relationships between and among teeth and facial bones by the application of forces and/or the stimulation and redirection of functional forces within the craniofacial complex. Major responsibilities of orthodontic practice include the diagnosis, prevention, interception and treatment of all forms of malocclusion of the teeth and associated alterations in their surrounding structures; the design, application and control of functional and corrective appliances; and the guidance of the dentition and its supporting structures to attain and maintain optimum occlusal relations in physiologic and esthetic harmony among facial and cranial structures.

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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 1588830269, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

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
5
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
8
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
3
Unchanged
Pos 7
0
Doubled → 0
Pos 8
2
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
9
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 8 → 16 → 7 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 + 5 + 1 + 6 + 8 + 1 + 6 + 3 + 0 + 2 + 1 + 2 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1588830269.

Other Providers at the Same Location


The following 7 providers are registered at the same or a nearby location.

Internal Medicine
1288 MORRO ST, SUITE 200
SAN LUIS OBISPO, CA 93401
Nurse Practitioner (Family)
1288 MORRO ST, SUITE 200
SAN LUIS OBISPO, CA 93401
Internal Medicine
1288 MORRO ST, SUITE 200
SAN LUIS OBISPO, CA 93401
Registered Nurse
1288 MORRO ST
SAN LUIS OBISPO, CA 93401
Clinic/Center (VA)
1288 MORRO ST, SUITE 200
SAN LUIS OBISPO, CA 93401
Psychologist (Clinical)
1288 MORRO ST
SAN LUIS OBISPO, CA 93401
Psychologist
1288 MORRO ST
SAN LUIS OBISPO, CA 93401

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1588830269, enumerated as an "individual" on May 02, 2008.

The provider is located at 1288 MORRO ST SUITE #110 SAN LUIS OBISPO, CA 93401 and the phone number is (805) 547-7080.

Dentist with taxonomy code 1223X0400X and a focus in Orthodontics and Dentofacial Orthopedics.