DR. NICHOLAS MITSIADES M.D., P.HD.
NPI 1508090754
Internal Medicine - Medical Oncology in Houston, TX

Q: What is Nicholas Mitsiades's NPI number?

The NPI number for Nicholas Mitsiades is 1508090754. It was assigned to this individual provider in the NPPES registry on May 3, 2009.

Q: What is Nicholas Mitsiades's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Active since May 03, 2009PECOS EnrolledAccepts Medicare Assignment

1504 TAUB LOOP, HOUSTON, TX 77030(713) 873-8890(713) 798-6677 Get Directions Write a Review

NPPES record last updated: September 22, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 22, 2022, Jan 6, 2022 (2 updates tracked since 2022).

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About Dr. Nicholas Mitsiades M.d., P.hd. NPPES

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

DR. NICHOLAS MITSIADES M.D., P.HD. (NPI 1508090754) is an individual medical oncology provider in Houston, Texas, licensed in California (A177673) and active in the NPI registry since May 2009. He is enrolled in Medicare PECOS and is a graduate of Other (1995).

NPPES Registry Identity

NPI1508090754

Entity TypeIndividualMale

Primary Taxonomy207RX0202X

Provider Legal NameDR. NICHOLAS MITSIADESCredential: M.D., P.HD.

Location Address1504 TAUB LOOPHouston, TX 77030-1608

Mailing Address4501 X St., Ste 3016Sacramento, CA 95817 · (916) 703-3282 · Fax (713) 798-6677

Phone(713) 873-8890

Fax(713) 798-6677

Sole ProprietorNo

Medical School CMSOtherGraduated 1995

Enumeration DateMay 3, 2009

Last NPPES UpdateSeptember 22, 20222 updates tracked since enumeration

NPPES CertifiedSeptember 22, 2022

✔ NPI 1508090754 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RX0202X

Licenses✔ Licensed in CA · A177673✔ Licensed in TX · 47493

Definition

An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.

Also ListedInternal MedicineTaxonomy 207R00000X · License 47493 (TX)

Also ListedInternal Medicine · Endocrinology, Diabetes & MetabolismTaxonomy 207RE0101X · License 47493 (TX)

1504 TAUB LOOP, Houston, TX 77030

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Nicholas Mitsiades M.d., P.hd. 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 ID2062694268

PECOS Enrollment IDI20220923001920

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.

Medicare Billing Reassignment

Medicare enrollment records show Nicholas Mitsiades reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Regents Of The Univ Of Ca

1,549 mi

Urogynecology and Reconstructive Pelvic Surgery

4860 Y ST
Sacramento, CA 95817

Reassigned Medicare billing, California enrollment
2,570 clinicians in this Medicare group

NPI 1285068783 (916) 734-6483

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

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 high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

128 services52 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.

54 services36 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

17 services11 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

13 services13 patients

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

$176.98 typical visit price

range $58.24 – $176.98

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

Most-billed visit code 99205

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 20

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

ZAVEN SARGSYAN MD

Internal Medicine

1504 TAUB LOOP
HOUSTON, TX 77030

Harris County (713) 873-8890

KAYE-ANN ANTONETTE CHRISTIE PA-C

Physician Assistant

1504 TAUB LOOP
HOUSTON, TX 77030

Harris County (713) 873-2000

EMILY MARIE WEBSTER PA-C

Physician Assistant

1504 TAUB LOOP
HOUSTON, TX 77030

Harris County (713) 873-8890

DR. MIGUEL A NIETO D.O.

Emergency Medicine

1504 TAUB LOOP, EMERGENCY CENTER
HOUSTON, TX 77030

Harris County (713) 873-7045

DR. LOUIS BRUNO FORNAGE MD

Emergency Medicine

1504 TAUB LOOP
HOUSTON, TX 77030

Harris County (713) 873-3060

DR. MICHELE TROUTMAN GIFFORD MD

Obstetrics & Gynecology

1504 TAUB LOOP
HOUSTON, TX 77030

Harris County (713) 798-1750

DR. KYLE SUEN M.D.

Emergency Medicine

1504 TAUB LOOP
HOUSTON, TX 77030

Harris County (713) 873-8890

DR. MIYSHA SHAW GIRARDEAU MD, MS

Internal Medicine

1504 TAUB LOOP
HOUSTON, TX 77030

Harris County (771) 387-3889

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 Nicholas Mitsiades's NPI number?

The NPI number for Nicholas Mitsiades is 1508090754. It was assigned to this individual provider in the NPPES registry on May 3, 2009.

Where is Nicholas Mitsiades located?

Nicholas Mitsiades practices at 1504 Taub Loop, Houston, TX 77030. The listed phone number is (713) 873-8890.

What is Nicholas Mitsiades's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is Nicholas Mitsiades enrolled in Medicare?

Yes. Nicholas Mitsiades 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.

Which organization bills Medicare for Nicholas Mitsiades's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Mitsiades reassigns Medicare benefits to Regents Of The Univ Of Ca (Sacramento, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nicholas Mitsiades's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Nicholas Mitsiades was last updated on September 22, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.