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DAVID WAYNE MICHALAK MD
NPI 1841325750
Family Medicine in The Woodlands, TX

Active since February 22, 2007PECOS EnrolledAccepts Medicare AssignmentCLIA 45D2020399 · Waiver
4840 W PANTHER CREEK DR STE 101, THE WOODLANDS, TX 77381(281) 367-1720 Get Directions Write a Review

NPPES record last updated: July 1, 2026. Verified against the NPPES registry weekly; last sync: September 06, 2026.

About David Wayne Michalak Md NPPES

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

DAVID WAYNE MICHALAK MD (NPI 1841325750) is an individual family medicine provider in The Woodlands, Texas, licensed in Texas (M5838) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through February 16, 2027, and is affiliated with Memorial Hermann Hospital System.

NPPES Registry Identity

NPI1841325750
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDAVID WAYNE MICHALAKCredential: MD
Location Address4840 W PANTHER CREEK DR STE 101The Woodlands, TX 77381-3528
Mailing AddressPo Box 57845Webster, TX 77598-7845
Phone(281) 367-1720
Sole ProprietorNo
Medical School CMSOtherGraduated 2006
Enumeration DateFebruary 22, 2007
Last NPPES UpdateJuly 1, 2026
NPPES CertifiedJuly 1, 2026
✔ NPI 1841325750 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in TX · M5838
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Also ListedFamily Medicine · Sleep MedicineTaxonomy 207QS1201X · License M5838 (TX)
4840 W PANTHER CREEK DR STE 101, The Woodlands, TX 77381
Open in Google Maps ↗

Secondary Practice Location 1

Location 1500 N Kobayashi Ste FWebster, TX 77598-4722 · Phone (281) 816-3092

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

David Wayne Michalak Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4789754672
PECOS Enrollment IDI20150112000834
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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 45D2020399

David W Michalak, MD · The Woodlands, TX
Active · expires Feb 16, 2027
CLIA Number45D2020399
Laboratory TypePhysician Office
Certificate Effective DateFebruary 17, 2025
Certificate Expiration DateFebruary 16, 2027
Laboratory DirectorDavid W. Michalak
Laboratory Phone(281) 367-1720
Laboratory LocationDavid W Michalak, MD4840 West Panther Creek #101, The Woodlands, TX 77381
CLIA data matches this NPI record on: Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 8

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
162 services102 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
95 services66 patients
Annual alcohol misuse screening, 5 to 15 minutes G0442
An annual alcohol misuse screening is a 15-minute check-up to assess your drinking habits. It helps identify if you're consuming alcohol in a way that could harm your health. This is not a judgment, but a tool to promote your wellbeing.
67 services67 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
64 services64 patients
Annual depression screening, 5 to 15 minutes G0444
An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.
64 services64 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
24 services24 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Memorial Hermann Hospital System

Acute Care Hospitals · Houston, TX
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450184
Location1635 North Loop WestHouston, TX 77008 · Harris County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77381 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
$84.92 typical visit price
range $54.84 – $166.88
Typical copayment $21.23 (range $13.71 – $41.72)
Most-billed visit code 99203
Established Patient
$97.05 typical visit price
range $17.52 – $136.11
Typical copayment $24.26 (range $4.38 – $34.02)
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.

Referred Medical Equipment & Supplies CMS DME claims 13

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
8 suppliers125 claims125 services$32.48 avg. paid by Medicare
Full face mask used with positive airway pressure device, each A7030
DME-Other DME · category DE001N
6 suppliers44 claims44 services$74.67 avg. paid by Medicare
Face mask interface, replacement for full face mask, each A7031
DME-Other DME · category DE001N
8 suppliers56 claims141 services$29.06 avg. paid by Medicare
Cushion for use on nasal mask interface, replacement only, each A7032
DME-Other DME · category DE001N
6 suppliers46 claims269 services$14.86 avg. paid by Medicare
Pillow for use on nasal cannula type interface, replacement only, pair A7033
DME-Other DME · category DE001N
7 suppliers43 claims234 services$12.23 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
10 suppliers97 claims97 services$45.64 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 David Michalak's NPI number?

The NPI number for David Michalak is 1841325750. It was assigned to this individual provider in the NPPES registry on February 22, 2007.

Where is David Michalak located?

David Michalak practices at 4840 W Panther Creek Dr Ste 101, The Woodlands, TX 77381. The listed phone number is (281) 367-1720.

What is David Michalak's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is David Michalak enrolled in Medicare?

Yes. David Michalak is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Does David Michalak hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 45D2020399) is associated with this NPI, valid through February 16, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does David Michalak accept?

Health plans from UnitedHealthcare list David Michalak as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is David Michalak affiliated with any hospitals?

According to CMS data, David Michalak is affiliated with Memorial Hermann Hospital System.

When was this NPI record last updated?

The NPPES record for David Michalak was last updated on July 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.