Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MIKAEL GUZMAN KARLSSON MD, PHD
NPI 1366939126
Psychiatry & Neurology - Neurology with Special Qualifications in Child Neurology in Houston, TX

Q: What is Mikael Guzman Karlsson's NPI number?

The NPI number for Mikael Guzman Karlsson is 1366939126. It was assigned to this individual provider in the NPPES registry on April 17, 2018.

Q: What is Mikael Guzman Karlsson's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology with Special Qualifications in Child Neurology, with taxonomy code 2084N0402X.

Active since April 17, 2018PECOS Enrolled

6701 FANNIN ST STE 950, HOUSTON, TX 77030(832) 822-5046(832) 825-3504 Get Directions Write a Review

NPPES record last updated: August 5, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Aug 5, 2026, Apr 17, 2018 (2 updates tracked since 2018).

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About Mikael Guzman Karlsson Md, Phd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MIKAEL GUZMAN KARLSSON MD, PHD (NPI 1366939126) is an individual neurology with special qualifications in child neurology provider in Houston, Texas, licensed in Texas (V3011) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS and maintains a secondary practice location in Houston.

NPPES Registry Identity

NPI1366939126

Entity TypeIndividualMale

Primary Taxonomy2084N0402X

Provider Legal NameMIKAEL GUZMAN KARLSSONCredential: MD, PHD

Location Address6701 FANNIN ST STE 950Houston, TX 77030-2611

Mailing Address6701 Fannin St Ste 950Houston, TX 77030-2611 · (832) 822-5046 · Fax (832) 825-3504

Phone(832) 822-5046

Fax(832) 825-3504

Sole ProprietorNo

Enumeration DateApril 17, 2018

Last NPPES UpdateAugust 5, 20262 updates tracked since enumeration

NPPES CertifiedAugust 5, 2026

✔ NPI 1366939126 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPsychiatry & Neurology · Neurology with Special Qualifications in Child NeurologyAllopathic & Osteopathic Physicians

Taxonomy Code2084N0402X

License✔ Licensed in TX · V3011

Definition

A Child Neurologist specializes in neurology with special skills in diagnosis and treatment of neurologic disorders of the neonatal period, infancy, early childhood, and adolescence.

Also ListedPreventive Medicine · Clinical InformaticsTaxonomy 2083C0008X · License V3011 (TX)

Also ListedPsychiatry & Neurology · Neurodevelopmental DisabilitiesTaxonomy 2084P0005X · License V3011 (TX)

6701 FANNIN ST STE 950, Houston, TX 77030

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Secondary Practice Location 1

Location 16621 Fannin StHouston, TX 77030-2399 · Phone (832) 824-1000

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mikael Guzman Karlsson Md, Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77030 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$134.06 typical visit price

range $58.24 – $176.98

Typical copayment $33.51 (range $14.56 – $44.24)

Most-billed visit code 99204

Established Patient

$102.71 typical visit price

range $18.60 – $143.93

Typical copayment $25.67 (range $4.65 – $35.98)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

FATEMA MALBARI MD

Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)

6701 FANNIN ST STE 950
HOUSTON, TX 77030

Harris County (832) 824-1000

KIMBERLY M HOUCK M.D.

Psychiatry & Neurology (Epilepsy)

6701 FANNIN ST STE 950
HOUSTON, TX 77030

Harris County (832) 822-5046

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mikael Guzman Karlsson's NPI number?

The NPI number for Mikael Guzman Karlsson is 1366939126. It was assigned to this individual provider in the NPPES registry on April 17, 2018.

Where is Mikael Guzman Karlsson located?

Mikael Guzman Karlsson practices at 6701 Fannin St Ste 950, Houston, TX 77030. The listed phone number is (832) 822-5046.

What is Mikael Guzman Karlsson's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology with Special Qualifications in Child Neurology, with taxonomy code 2084N0402X.

Is Mikael Guzman Karlsson enrolled in Medicare?

Yes. Mikael Guzman Karlsson is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mikael Guzman Karlsson was last updated on August 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.