Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. RENA ZHENG M.D., PH.D.
NPI 1497140958
Internal Medicine - Hematology in Boston, MA

Q: What is Rena Zheng's NPI number?

The NPI number for Rena Zheng is 1497140958. It was assigned to this individual provider in the NPPES registry on April 1, 2015.

Q: What is Rena Zheng's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology, with taxonomy code 207RH0000X.

Q: When was this NPI record last updated?

The NPPES record for Rena Zheng was last updated on October 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 days 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.

Active since April 01, 2015PECOS Enrolled

97.02/100

CMS Quality Rating

450 BROOKLINE AVE, BOSTON, MA 02215(617) 632-3738 Get Directions Write a Review

NPPES record last updated: October 20, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 9, 2024, Oct 20, 2021, Oct 7, 2021 (3 updates tracked since 2021).

On this page

About Dr. Rena Zheng M.d., Ph.d. NPPES

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

DR. RENA ZHENG M.D., PH.D. (NPI 1497140958) is an individual hematology provider in Boston, Massachusetts, licensed in Massachusetts (275212) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS, is affiliated with Umass Memorial Healthalliance Hospitals, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1497140958

Entity TypeIndividualFemale

Primary Taxonomy207RH0000X

Provider Legal NameDR. RENA ZHENGCredential: M.D., PH.D.

Location Address450 BROOKLINE AVEBoston, MA 02215-5450

Mailing Address450 Brookline AveBoston, MA 02215-5450 · (617) 632-3738

Phone(617) 632-3738

Sole ProprietorNo

Medical School CMSOtherGraduated 2015

Enumeration DateApril 1, 2015

Last NPPES UpdateOctober 20, 20263 updates tracked since enumeration

NPPES CertifiedOctober 20, 2026

✔ NPI 1497140958 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · HematologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0000X

License✔ Licensed in MA · 275212

Definition

An internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, clotting disorders, sickle cell disease, hemophilia, leukemia and lymphoma.

Also ListedInternal Medicine · Medical OncologyTaxonomy 207RX0202X · License 275212 (MA)

450 BROOKLINE AVE, Boston, MA 02215

Open in Google Maps ↗

Secondary Practice Locations 2

Location 155 Lake Ave NWorcester, MA 01655-0002 · Phone (508) 334-3550 · Fax (774) 442-9130

Location 2157 Union StMarlborough, MA 01752-1228 · Phone (508) 486-6700 · Fax (508) 486-6705

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Taro Health.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. Rena Zheng M.d., Ph.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 ID7113234774

PECOS Enrollment IDI20211014001675

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 Rena Zheng reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Umass Memorial Medical Group Inc

34 mi

Internal Medicine

55 LAKE AVE N
Worcester, MA 01655

Reassigned Medicare billing, Massachusetts enrollment
2,902 clinicians in this Medicare group

NPI 1760445373 (508) 334-1000

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 12

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 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.

158 services99 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

139 services86 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

47 services47 patients

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.

46 services26 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

44 services28 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.

43 services43 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

31 services31 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.

23 services22 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

21 services21 patients

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.

19 services14 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

15 services14 patients

Telephone medical discussion with physician, 21-30 minutes 99443

This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.

14 services11 patients

Hospital Affiliations CMS Care Compare 5

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

Umass Memorial Healthalliance Hospitals

Acute Care Hospitals · Leominster, MA

2/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number220001

Location60 Hospital RoadLeominster, MA 01453 · Worcester County

Emergency services

Umass Memorial Health - Harrington Hospital

Acute Care Hospitals · Southbridge, MA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220019

Location100 South StreetSouthbridge, MA 01550 · Worcester County

Emergency services

Umass Memorial Healthcare-Marlborough Hospital

Acute Care Hospitals · Marlborough, MA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220049

Location157 Union StreetMarlborough, MA 01752 · Middlesex County

Emergency services

Milford Regional Medical Center

Acute Care Hospitals · Milford, MA

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number220090

Location14 Prospect StreetMilford, MA 01757 · Worcester County

Emergency services Birthing friendly

Umass Memorial Medical Center/University Campus

Acute Care Hospitals · Worcester, MA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number220163

Location55 Lake Avenue NorthWorcester, MA 01655 · Worcester County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02215 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

$189.86 typical visit price

range $63.72 – $189.86

Typical copayment $47.46 (range $15.93 – $47.46)

Most-billed visit code 99205

Established Patient

$111.18 typical visit price

range $21.07 – $155.29

Typical copayment $27.79 (range $5.26 – $38.82)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

97.02/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

78.09

Promoting Interoperability

100

Improvement Activities

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.

PRABHSIMRANJOT SINGH MD

Internal Medicine (Hematology & Oncology)

450 BROOKLINE AVE
BOSTON, MA 02215

Suffolk County (617) 582-7956

SHAWN MAGUIRE PA-C

Physician Assistant

450 BROOKLINE AVE
BOSTON, MA 02215

Suffolk County (617) 582-8487

KARINA FRANCA

Genetic Counselor, MS

450 BROOKLINE AVE
BOSTON, MA 02215

Suffolk County (857) 215-2285

DR. SUZANNE JAQUETH FORREST M.D.

Pediatrics (Pediatric Hematology-Oncology)

450 BROOKLINE AVE
BOSTON, MA 02215

Suffolk County (617) 632-3270

LAUREN KIRITSY MSW, LCSW

Counselor (Mental Health)

450 BROOKLINE AVE
BOSTON, MA 02215

Suffolk County (857) 215-3448

OFIR WOLAJ MD

Internal Medicine (Hematology & Oncology)

450 BROOKLINE AVE, DANA 2058
BOSTON, MA 02215

Suffolk County (617) 632-6139

JASON BATALHA AGPCNP-BC

Nurse Practitioner

450 BROOKLINE AVE
BOSTON, MA 02215

Suffolk County (617) 632-6140

FATIMA EMRAN AMIR MS, LGC

Genetic Counselor, MS

450 BROOKLINE AVE
BOSTON, MA 02215

Suffolk County (617) 632-3729

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 Rena Zheng's NPI number?

The NPI number for Rena Zheng is 1497140958. It was assigned to this individual provider in the NPPES registry on April 1, 2015.

Where is Rena Zheng located?

Rena Zheng practices at 450 Brookline Ave, Boston, MA 02215. The listed phone number is (617) 632-3738.

What is Rena Zheng's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology, with taxonomy code 207RH0000X.

Is Rena Zheng enrolled in Medicare?

Yes. Rena Zheng 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 Rena Zheng's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Rena Zheng reassigns Medicare benefits to Umass Memorial Medical Group Inc (Worcester, MA). 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 Rena Zheng's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Rena Zheng accept?

Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Rena Zheng 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 Rena Zheng affiliated with any hospitals?

According to CMS data, Rena Zheng is affiliated with Umass Memorial Healthalliance Hospitals, Umass Memorial Health - Harrington Hospital, Umass Memorial Healthcare-Marlborough Hospital, Milford Regional Medical Center and Umass Memorial Medical Center/University Campus.

When was this NPI record last updated?

The NPPES record for Rena Zheng was last updated on October 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 days 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.