Active NPI
David Elias Messer, PHD
- Counseling Psychologist
- Mesa, AZ
National Provider Identifier
1982103172
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Counseling Psychologist
- License
- 4933
- Practice address
- 1845 W. Dobson Rd.
Ste 207
Mesa, AZ 85202 - Phone
- (480) 744-6483
- NPI assigned
- Feb 2, 2018
- Sex
- Male
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Counseling Psychologist | 103TC1900X | 4933 | AZ | Primary |
Addresses
Primary practice location
1845 W. Dobson Rd.
Ste 207
Mesa, AZ 85202
Mailing address
1845 S Dobson Rd Ste 207
Mesa, AZ 85202-5663
Phone (480) 744-6483
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in AZ
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: No
- Power mobility devices: No
- Hospice: No
Enrollment records 1
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20200622002620 | AZ | Practitioner - Clinical Psychologist | 0345662292 | Practice locations: Mesa, AZ |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Philosophy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 4933 | AZ | MD | Counseling Psychologist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1517529600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1750291200000",
"number": "1982103172",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1845 S DOBSON RD STE 207",
"city": "MESA",
"state": "AZ",
"postal_code": "852025663",
"telephone_number": "480-744-6483"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1845 W. DOBSON RD.",
"address_2": "STE 207",
"city": "MESA",
"state": "AZ",
"postal_code": "85202",
"telephone_number": "480-744-6483"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MESSER",
"first_name": "DAVID",
"middle_name": "ELIAS",
"name_prefix": "Dr.",
"credential": "PHD",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2018-02-02",
"last_updated": "2025-06-19",
"certification_date": "2025-06-19",
"status": "A"
},
"taxonomies": [
{
"code": "103TC1900X",
"taxonomy_group": "",
"desc": "Psychologist, Counseling",
"state": "AZ",
"license": "4933",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Mesa, AZ
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 19, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.