What is Mark Baker's NPI number?

Mark Baker's National Provider Identifier (NPI) is 1366688582, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Baker's specialty?

Mark Baker is listed in the NPPES registry with a primary specialty of Hearing Instrument Specialist (Speech, Language and Hearing Service Providers).

Where is Mark Baker located?

Mark Baker's practice location on file with NPPES is 18747 N Reems Rd Ste 540, Surprise, AZ 85374.

What is Mark Baker's phone number?

The practice phone number listed in the NPPES registry for Mark Baker is (623) 214-1700.

Is Mark Baker's NPI active?

Yes — Mark Baker's NPI (1366688582) is active in the NPPES registry as of the last update on 2019-01-14.

IndividualActive

Mark Baker

NPI 1366688582 · Hearing Instrument Specialist · Surprise, AZ

Mark Baker is a Hearing Instrument Specialist provider in Surprise, AZ (NPI 1366688582).

Provider details

NPI number: 1366688582
Entity type: Individual
Primary specialty: Hearing Instrument SpecialistSpeech, Language and Hearing Service Providers
Sex: Male
Sole proprietor: No
License: HAD5543 (AZ)

Specialties & taxonomies

Hearing Instrument SpecialistPrimary237700000XLicense HAD5543 (AZ)
Speech, Language and Hearing Service Providers

Profile Score

Detailed profile(95/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
17 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
4 documented practice locations

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

18747 N Reems Rd Ste 540

Surprise, AZ 85374

Phone: (623) 214-1700

Fax: (623) 214-6077

Street-level locationGet directions

More AZ providers

Mailing address

6700 Washington Ave S

Eden Prairie, MN 55344-3405

Additional practice locations (3)

312 W 10th St Ste 1
Casa Grande, AZ 85122-3940
Phone: (520) 836-8366
Fax: (520) 836-2229
18275 N 59th Ave Ste 184
Glendale, AZ 85308-1254
Phone: (602) 841-9424
Fax: (602) 841-3713
13631 N 59th Ave
Glendale, AZ 85304-1203
Phone: (602) 841-9424

Enumerated: 2008-12-17
Last updated: 2019-01-14

Frequently asked questions

What is Mark Baker's NPI number?: Mark Baker's National Provider Identifier (NPI) is 1366688582, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Mark Baker's specialty?: Mark Baker is listed in the NPPES registry with a primary specialty of Hearing Instrument Specialist (Speech, Language and Hearing Service Providers).
Where is Mark Baker located?: Mark Baker's practice location on file with NPPES is 18747 N Reems Rd Ste 540, Surprise, AZ 85374.
What is Mark Baker's phone number?: The practice phone number listed in the NPPES registry for Mark Baker is (623) 214-1700.
Is Mark Baker's NPI active?: Yes — Mark Baker's NPI (1366688582) is active in the NPPES registry as of the last update on 2019-01-14.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.