DR. MICHAEL ALAN MASS, DDS D.D.S.
NPI 1245673649
Dentist in New York, NY

NPI Status: Active since April 16, 2013

Contact Information

654 MADISON AVE
SUITE 904
NEW YORK, NY
ZIP 10065
Phone: (212) 838-5060

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  • Individual
  • Female
  • Dentist
  • CLIA Number: 33D2205366
  • CLIA Cert. Type: Physician Office
  • CLIA Exp. Date: 12-13-2026

About MICHAEL MASS, DDS

This page provides the complete NPI Profile along with additional information for Michael Mass, Dds, a provider established in New York, New York with a medical specialization in Dentist. The healthcare provider is registered in the NPI registry with number 1245673649 assigned on April 2013. The practitioner's primary taxonomy code is 122300000X with license number 039788 (NY). The provider is registered as an individual and her NPI record was last updated 13 years ago.

NPI
1245673649
Provider Name
DR. MICHAEL ALAN MASS, DDS D.D.S.
Gender
Female
Entity Type
Individual
Location Address
654 MADISON AVE SUITE 904 NEW YORK, NY 10065
Location Phone
(212) 838-5060
Mailing Address
654 MADISON AVE SUITE 904 NEW YORK, NY 10065
Mailing Phone
(212) 838-5060
Is Sole Proprietor?
Yes
Enumeration Date
04-16-2013
Last Update Date
04-16-2013
Code Navigator

A dentist like Michael Mass, Dds 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

Taxonomy Code
122300000X
Type
Dental Providers
License No.
039788
License State
NY
Taxonomy Description
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.

CLIA Information

The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:

CLIA Number
33D2205366
Facility Type
Physician Office
Certificate Effective Date
December 14, 2024
Certificate Expiration Date
December 13, 2026
Laboratory Director
DR. MICHAEL A. MASS
Certificate Type
Certificate of Waiver
Certificate Type Description
This CLIA certificate is issued to Michael Mass, Dds to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.

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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 1245673649, 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 71. The final step is to find the difference between that total and the next multiple of ten (80 - 71 = 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
2
Unchanged
Pos 3
4
Doubled → 8
Pos 4
5
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
7
Unchanged
Pos 7
3
Doubled → 6
Pos 8
6
Unchanged
Pos 9
4
Doubled → 8
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 4 → 8 6 → 12 → 3 3 → 6 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 8 + 5 + 1 + 2 + 7 + 6 + 6 + 8 + 24 = 71

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

The next multiple of ten after 71 is 80. The difference is the calculated check digit.

80 - 71 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1245673649.

Other Providers at the Same Location


The following 6 providers are registered at the same or a nearby location.

Anesthesiology
654 MADISON AVE, 6TH FLOOR
NEW YORK, NY 10065
Dentist
654 MADISON AVE, SUITE 904
NEW YORK, NY 10065
Audiologist
654 MADISON AVE, SUITE 709
NEW YORK, NY 10065
Dentist
654 MADISON AVE, SUITE1501
NEW YORK, NY 10065
Audiologist-Hearing Aid Fitter
654 MADISON AVE, SUITE 709
NEW YORK, NY 10065
Sleep Specialist, PhD
654 MADISON AVE, SUITE 709
NEW YORK, NY 10065

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1245673649, enumerated as an "individual" on April 16, 2013.

The provider is located at 654 MADISON AVE SUITE 904 NEW YORK, NY 10065 and the phone number is (212) 838-5060.

Dentist with taxonomy code 122300000X.