What is Mark Norbert Guiab's NPI number?

Mark Norbert Guiab's National Provider Identifier (NPI) is 1346770914, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Norbert Guiab's specialty?

Mark Norbert Guiab is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).

Where is Mark Norbert Guiab located?

Mark Norbert Guiab's practice location on file with NPPES is 1328 Main St Unit B, Crete, IL 60417-2131.

What is Mark Norbert Guiab's phone number?

The practice phone number listed in the NPPES registry for Mark Norbert Guiab is (708) 277-6924.

Does Mark Norbert Guiab accept Medicare?

Mark Norbert Guiab is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Mark Norbert Guiab's NPI active?

Yes — Mark Norbert Guiab's NPI (1346770914) is active in the NPPES registry as of the last update on 2025-02-03.

IndividualActiveAccepts Medicare

Mark Norbert Guiab, FPA, PMHNP-BC, FNP-C

NPI 1346770914 · Psychiatric/Mental Health Nurse Practitioner · Crete, IL

Mark Norbert Guiab, FPA, PMHNP-BC, FNP-C is a Psychiatric/Mental Health Nurse Practitioner provider in Crete, IL (NPI 1346770914).

Provider details

NPI number: 1346770914
Entity type: Individual
Primary specialty: Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Credential: FPA, PMHNP-BC, FNP-C
Sex: Male
Sole proprietor: No
License: 277001928 (IL)

Practice location

1328 Main St Unit B

Crete, IL 60417-2131

Phone: (708) 277-6924

Fax: (708) 277-6924

Street-level locationGet directions

More IL providers

Mailing address

1328 Main St Unit B

Crete, IL 60417-2131

Specialties & taxonomies

Psychiatric/Mental Health Nurse PractitionerPrimary363LP0808XLicense 277001928 (IL)
Physician Assistants & Advanced Practice Nursing Providers
Nurse Practitioner363L00000XLicense 209016243 (IL)
Physician Assistants & Advanced Practice Nursing Providers

Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(81/100 index)

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

Registry tenure25% of score
9 yrs in NPPES registry
Profile completeness25% of score
100% of core fields populated
Practice footprint15% of score
1 documented practice location
Medicare service volume (vs. specialty peers)25% of score
4,474 Medicare services, 2024 (ranked within specialty)
Open Payments transparency10% of score
Has Open Payments disclosures (2024)

Medicare volume is ranked against active providers in the same specialty. 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.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309	1,505	$94
Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308	909	$65
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	561	$78
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	387	$112
Residence Visit for Established Patient With Low Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99348	305	$66
Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 69 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Quetiapine Fumarate	647	54
Clonazepam	527	42
Divalproex Sodium	525	51
Duloxetine Hcl	415	34
Trazodone Hcl	395	51
Risperidone	388	29
Sertraline Hcl	363	39

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$531 across 7 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2017-06-15
Last updated: 2025-02-03
Certified: 2025-02-03

Frequently asked questions

What is Mark Norbert Guiab's NPI number?: Mark Norbert Guiab's National Provider Identifier (NPI) is 1346770914, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Mark Norbert Guiab's specialty?: Mark Norbert Guiab is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
Where is Mark Norbert Guiab located?: Mark Norbert Guiab's practice location on file with NPPES is 1328 Main St Unit B, Crete, IL 60417-2131.
What is Mark Norbert Guiab's phone number?: The practice phone number listed in the NPPES registry for Mark Norbert Guiab is (708) 277-6924.
Does Mark Norbert Guiab accept Medicare?: Mark Norbert Guiab is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Mark Norbert Guiab's NPI active?: Yes — Mark Norbert Guiab's NPI (1346770914) is active in the NPPES registry as of the last update on 2025-02-03.

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

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309	1,505	$94
Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308	909	$65
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	561	$78
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	387	$112
Residence Visit for Established Patient With Low Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99348	305	$66
Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes

Drug

Part D claims (2024)

Beneficiaries

Quetiapine Fumarate

647

Clonazepam

527

Divalproex Sodium

525

Duloxetine Hcl

415

Trazodone Hcl

395

Risperidone

388

Sertraline Hcl

363

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$531 across 7 records (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments