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DR. GRETCHEN MARTINEZ ALAYON M.D.
NPI 1942465661
Internal Medicine in Hatillo, PR

Active since July 22, 2008PECOS EnrolledAccepts Medicare Assignment
HC 6 BOX 14310, HATILLO, PR 00659(787) 484-8454 Get Directions Write a Review

NPPES record last updated: April 23, 2012. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Dr. Gretchen Martinez Alayon M.d. NPPES

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

DR. GRETCHEN MARTINEZ ALAYON M.D. (NPI 1942465661) is an individual internal medicine provider in Hatillo, Puerto Rico, licensed in Puerto Rico (18435) and active in the NPI registry since July 2008. She is enrolled in Medicare PECOS, is affiliated with Adventhealth Orlando, and is a graduate of Other (2002).

NPPES Registry Identity

NPI1942465661
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. GRETCHEN MARTINEZ ALAYONCredential: M.D.
Location AddressHC 6 BOX 14310Hatillo, PR 00659-6602
Mailing AddressHc 6 Box 14310Hatillo, PR 00659-6602
Phone(787) 484-8454
Sole ProprietorYes
Medical School CMSOtherGraduated 2002
Enumeration DateJuly 22, 2008
Last NPPES UpdateApril 23, 2012
✔ NPI 1942465661 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in PR · 18435
Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

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

Dr. Gretchen Martinez Alayon 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 ID6103077276
PECOS Enrollment IDI20121119000538
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.

Areas of Expertise CMS Part B claims 6

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.

Follow-up hospital inpatient care per day, typically 25 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.
530 services187 patients
Follow-up hospital inpatient care per day, typically 35 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
87 services61 patients
Follow-up hospital inpatient care per day, typically 15 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
84 services60 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
56 services55 patients
Initial hospital inpatient care per day, typically 70 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
42 services42 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
31 services30 patients

Hospital Affiliations CMS Care Compare

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

Adventhealth Orlando

Acute Care Hospitals · Orlando, FL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number100007
Location601 E Rollins StOrlando, FL 32803 · Orange County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 00659 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
$130.65 typical visit price
range $56.86 – $172.44
Typical copayment $32.66 (range $14.21 – $43.11)
Most-billed visit code 99204
Established Patient
$100.24 typical visit price
range $18.24 – $140.44
Typical copayment $25.06 (range $4.56 – $35.11)
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 Gretchen Martinez Alayon's NPI number?

The NPI number for Gretchen Martinez Alayon is 1942465661. It was assigned to this individual provider in the NPPES registry on July 22, 2008.

Where is Gretchen Martinez Alayon located?

Gretchen Martinez Alayon practices at Hc 6 Box 14310, Hatillo, PR 00659. The listed phone number is (787) 484-8454.

What is Gretchen Martinez Alayon's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Gretchen Martinez Alayon enrolled in Medicare?

Yes. Gretchen Martinez Alayon 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.

Is Gretchen Martinez Alayon affiliated with any hospitals?

According to CMS data, Gretchen Martinez Alayon is affiliated with Adventhealth Orlando.

When was this NPI record last updated?

The NPPES record for Gretchen Martinez Alayon was last updated on April 23, 2012. NPI Profile syncs with the weekly NPPES data releases published by CMS.