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DR. MARIA CRISTINA RAMIREZ HUBBARD M.D.
NPI 1598735805
Psychiatry & Neurology - Behavioral Neurology & Neuropsychiatry in Key Biscayne, FL

Active since January 26, 2006PECOS EnrolledAccepts Medicare Assignment
951 CRANDON BLVD UNIT 491554, KEY BISCAYNE, FL 33149(281) 529-5912 Get Directions Write a Review

NPPES record last updated: July 14, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 14, 2020, May 13, 2020, Jan 25, 2017 (3 updates tracked since 2017).

About Dr. Maria Cristina Ramirez Hubbard M.d. NPPES

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

DR. MARIA CRISTINA RAMIREZ HUBBARD M.D. (NPI 1598735805) is an individual behavioral neurology & neuropsychiatry provider in Key Biscayne, Florida, licensed in Florida (ME128569) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS and is a graduate of University Of Puerto Rico School Of Medicine (1985).

NPPES Registry Identity

NPI1598735805
Entity TypeIndividualFemale
Primary Taxonomy2084B0040X
Provider Legal NameDR. MARIA CRISTINA RAMIREZ HUBBARDCredential: M.D.
Location Address951 CRANDON BLVD UNIT 491554Key Biscayne, FL 33149-3477
Mailing AddressPo Box 491554Key Biscayne, FL 33149-7554 · (281) 529-5912
Phone(281) 529-5912
Sole ProprietorNo
Medical School CMSUniversity Of Puerto Rico School Of MedicineGraduated 1985
Enumeration DateJanuary 26, 2006
Last NPPES UpdateJuly 14, 20203 updates tracked since enumeration
NPPES CertifiedJuly 14, 2020
✔ NPI 1598735805 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPsychiatry & Neurology · Behavioral Neurology & NeuropsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084B0040X
License✔ Licensed in FL · ME128569
Definition
Behavioral Neurology & Neuropsychiatry is a medical subspecialty involving the diagnosis and treatment of neurologically based behavioral issues.
Also ListedPsychiatry & Neurology · NeurologyTaxonomy 2084N0400X · License ME128569 (FL), 17993 (PR), J4979 (TX)
Also ListedPsychiatry & Neurology · Brain Injury MedicineTaxonomy 2084P0301X · License ME128569 (FL)
951 CRANDON BLVD UNIT 491554, Key Biscayne, FL 33149
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Other Names 1

Former Name (1)Maria C Ramirez-nieto Md

Other Identifiers 7

Other10021573TX · Amerigroup Corp.
Other10596334TX · Great West Ins.
Medicaid128501701TX
Other130019740TX · Railroad Medicare
Other4540550001TX · Supplier Id Number W/ Gba
Other5909112TX · Aetna
Other82870STX · Blue Cross & Blue Shields

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas.Insurance ›

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. Maria Cristina Ramirez Hubbard M.d. 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 ID9739140393
PECOS Enrollment IDI20100316000560
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 Maria Hubbard reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Shannon Clinic
1,293 mi
Family Medicine
120 E BEAUREGARD AVE
San Angelo, TX 76903
  • Reassigned Medicare billing, Texas enrollment
  • 671 clinicians in this Medicare group
NPI 1770587149 (325) 658-1511

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 33149 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
$141.56 typical visit price
range $60.92 – $187.05
Typical copayment $35.39 (range $15.23 – $46.76)
Most-billed visit code 99204
Established Patient
$107.17 typical visit price
range $18.99 – $150.24
Typical copayment $26.79 (range $4.74 – $37.56)
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.

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 Maria Hubbard's NPI number?

The NPI number for Maria Hubbard is 1598735805. It was assigned to this individual provider in the NPPES registry on January 26, 2006. The provider is also known as Maria C Ramirez-Nieto MD.

Where is Maria Hubbard located?

Maria Hubbard practices at 951 Crandon Blvd Unit 491554, Key Biscayne, FL 33149. The listed phone number is (281) 529-5912.

What is Maria Hubbard's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Behavioral Neurology & Neuropsychiatry, with taxonomy code 2084B0040X.

Is Maria Hubbard enrolled in Medicare?

Yes. Maria Hubbard 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 Maria Hubbard's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Maria Hubbard reassigns Medicare benefits to Shannon Clinic (San Angelo, TX). 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 Maria Hubbard's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Maria Hubbard accept?

Health plans from Blue Cross and Blue Shield of Texas list Maria Hubbard 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.

When was this NPI record last updated?

The NPPES record for Maria Hubbard was last updated on July 14, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.