Individual provider

Joseph Keryakos, PHARMD

Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist

Joseph Keryakos, PHARMD is a Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist in Sioux Falls, SD, registered under NPI 1639987852.

Getting there

The practice address on file is 1325 S CLIFF AVE, Sioux Falls, SD 57105. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.

1325 S CLIFF AVE, Sioux Falls, SD 57105 Open in Google Maps →

Credentials and Medicare

State licence
LicenceStateSpecialty
7224 SD Pharmacist Clinician (PhC)/ Clinical… primary
5302417289 MI Pharmacist Clinician (PhC)/ Clinical…

Licences are recorded in 2 states: SD, MI. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.

Medicare (PECOS)

This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.

Licensed in 2 states

This provider holds licences in 2 states: Michigan and South Dakota. The practice address on file is in Sioux Falls, SD, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.

MI Michigan
Licence
5302417289
Specialty
Pharmacist Clinician (PhC)/ Clinical…
Verify with the MI board →
SD South Dakota practice address
Licence
7224
Specialty
Pharmacist Clinician (PhC)/ Clinical…
Verify with the SD board →

Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.

What Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist covers

Pharmacist Clinician/Clinical Pharmacy Specialist is a pharmacist with additional training and an expanded scope of practice that may include prescriptive authority, therapeutic management, and disease management. NUCC Health Care Provider Taxonomy, code 1835P0018X
Pharmacy Service Providers Pharmacist Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist

All registered taxonomy codes

This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.

CodeSpecialtyLicenceState
1835P0018X Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist 7224 SD primary
1835P0018X Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist 5302417289 MI

The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.

Full NPPES record

An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.

NPI1639987852 valid check digit
Entity typeIndividual (NPI-1)
Enumeration dateDec 19, 2024
Last updatedApr 14, 2025
StatusActive
Sole proprietorNo
GenderMale
CredentialPHARMD
Practice address 1325 S CLIFF AVE
Sioux Falls, SD 57105
(605) 322-8000
This record was updated on Apr 14, 2025, which is recent enough that the contact details are likely still accurate.

Number check

1639987852 passes the NPI check digit test The final digit 2 matches the value computed from the first nine digits, so this is a well-formed NPI.
How the check works, step by step

Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.

Digit 8 0 8 4 0 1 6 3 9 9 8 7 8 5
Doubled? ×2 ×2 ×2 ×2 ×2 ×2 ×2
Value 8 0 8 8 0 2 6 6 9 9 8 5 8 1

Sum = 78 · next multiple of 10 = 80 · check digit = 2 · actual last digit = 2

A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.

Common questions

What is NPI number 1639987852?
NPI 1639987852 is the National Provider Identifier assigned to Joseph Keryakos, PHARMD in Sioux Falls, SD. It is a 10-digit number issued by the Centers for Medicare & Medicaid Services and used on claims, referrals, and prescriptions to identify the provider.
What does Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist cover?
Pharmacist Clinician/Clinical Pharmacy Specialist is a pharmacist with additional training and an expanded scope of practice that may include prescriptive authority, therapeutic management, and disease management.
How do I contact Joseph Keryakos, PHARMD?
The phone number on file with NPPES is (605) 322-8000, last updated Apr 14, 2025. Because NPPES is only updated when a provider files a change, call ahead to confirm the number and the current practice address before visiting.
Is NPI 1639987852 a valid number?
Yes. 1639987852 passes the Luhn check digit validation that CMS uses for NPI numbers, and it resolves to an active record in the registry.
How to use this page. Everything here comes from public federal records. Tips Health does not verify quality of care, confirm that a licence is currently active, or check malpractice history, and accepts no fees for placement. A listing is not a recommendation. Verify independently before seeking care.