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DR. XIAORAN GUO D.O.
NPI 1881027365
Internal Medicine - Infectious Disease in Buffalo, NY

Active since August 20, 2013PECOS EnrolledAccepts Medicare Assignment
144 GENESEE ST 3RD FL, BUFFALO, NY 14203(716) 601-3690 Get Directions Write a Review

NPPES record last updated: May 7, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 7, 2023, Jun 14, 2018, May 10, 2016 (3 updates tracked since 2016).

About Dr. Xiaoran Guo D.o. NPPES

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

DR. XIAORAN GUO D.O. (NPI 1881027365) is an individual infectious disease provider in Buffalo, New York, licensed in New York (299441) and active in the NPI registry since August 2013. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Of Buffalo, and is a graduate of Other (2013).

NPPES Registry Identity

NPI1881027365
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameDR. XIAORAN GUOCredential: D.O.
Location Address144 GENESEE ST 3RD FLBuffalo, NY 14203
Mailing AddressPo Box 636256 Central CredentialingCincinnati, OH 45263-6256 · (513) 585-5504 · Fax (513) 585-5511
Phone(716) 601-3690
Sole ProprietorNo
Medical School CMSOtherGraduated 2013
Enumeration DateAugust 20, 2013
Last NPPES UpdateMay 7, 20233 updates tracked since enumeration
NPPES CertifiedMay 7, 2023
✔ NPI 1881027365 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
Licenses✔ Licensed in NY · 299441✔ Licensed in OH · 58.007374✔ Licensed in OH · 34013451
Definition
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.
Also ListedInternal MedicineTaxonomy 207R00000X · License ED0386A (WV)
144 GENESEE ST 3RD FL, Buffalo, NY 14203
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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. Xiaoran Guo D.o. 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 ID9638473986
PECOS Enrollment IDI20190913001994
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 Reassignments

4

Medicare enrollment records show Xiaoran Guo reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Sisters Of Charity Hospital Of Buffalo, New York
2.9 mi
Obstetrics & Gynecology
2157 MAIN ST
Buffalo, NY 14214
  • Reassigned Medicare billing, New York enrollment
  • 515 clinicians in this Medicare group
NPI 1659396380 (716) 862-1000
Mercy Hospital Of Buffalo
4.1 mi
Rehabilitation Unit
565 ABBOTT RD
Buffalo, NY 14220
  • Reassigned Medicare billing, New York enrollment
  • 499 clinicians in this Medicare group
NPI 1659310605 (716) 826-7000
Kenmore Mercy Hospital
6.1 mi
General Acute Care Hospital
2950 ELMWOOD AVE
Kenmore, NY 14217
  • Reassigned Medicare billing, New York enrollment
  • 271 clinicians in this Medicare group
NPI 1770598104 (716) 447-6100
Mount St. Mary's Hospital Of Niagara Falls
20 mi
General Acute Care Hospital
5300 MILITARY RD
Lewiston, NY 14092
  • Reassigned Medicare billing, New York enrollment
  • Medicare enrollment name: Mount St. Marys Hospital Of Niagara Falls
  • 289 clinicians in this Medicare group
NPI 1043394745 (716) 298-2081

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 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.
89 services50 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 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.
59 services55 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.
14 services14 patients
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.
12 services11 patients

Hospital Affiliations CMS Care Compare

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

Mercy Hospital Of Buffalo

Acute Care Hospitals · Buffalo, NY
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330279
Location565 Abbott RoadBuffalo, NY 14220 · Erie County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 14203 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
$126.40 typical visit price
range $54.87 – $166.88
Typical copayment $31.60 (range $13.71 – $41.72)
Most-billed visit code 99204
Established Patient
$97.08 typical visit price
range $17.54 – $136.14
Typical copayment $24.27 (range $4.38 – $34.03)
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 Xiaoran Guo's NPI number?

The NPI number for Xiaoran Guo is 1881027365. It was assigned to this individual provider in the NPPES registry on August 20, 2013.

Where is Xiaoran Guo located?

Xiaoran Guo practices at 144 Genesee St 3rd Fl, Buffalo, NY 14203. The listed phone number is (716) 601-3690.

What is Xiaoran Guo's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Xiaoran Guo enrolled in Medicare?

Yes. Xiaoran Guo 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 organizations bill Medicare for Xiaoran Guo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Xiaoran Guo reassigns Medicare benefits to 4 organizations: Sisters Of Charity Hospital Of Buffalo, New York (Buffalo, NY), Mercy Hospital Of Buffalo (Buffalo, NY), Kenmore Mercy Hospital (Kenmore, NY) and Mount St. Mary's Hospital Of Niagara Falls (Lewiston, NY). Each 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 Xiaoran Guo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Xiaoran Guo affiliated with any hospitals?

According to CMS data, Xiaoran Guo is affiliated with Mercy Hospital Of Buffalo.

When was this NPI record last updated?

The NPPES record for Xiaoran Guo was last updated on May 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.