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DR. MADHU GARY SUBRAMANIAN M.D.
NPI 1851680466
Surgery - Trauma Surgery in Baltimore, MD

Active since April 04, 2011PECOS EnrolledAccepts Medicare Assignment
74.39/100
CMS Quality Rating
4940 EASTERN AVE BLDG 5TH, BALTIMORE, MD 21224(410) 550-0400(410) 550-1822 Get Directions Write a Review

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

Record update history: Sep 14, 2020, Nov 7, 2019, Jul 11, 2019 (3 updates tracked since 2019).

About Dr. Madhu Gary Subramanian M.d. NPPES

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

DR. MADHU GARY SUBRAMANIAN M.D. (NPI 1851680466) is an individual trauma surgery provider in Baltimore, Maryland, licensed in Maryland (D89722) and active in the NPI registry since April 2011. He is enrolled in Medicare PECOS, is affiliated with Duke University Hospital, and is a graduate of Emory University School Of Medicine (2011).

NPPES Registry Identity

NPI1851680466
Entity TypeIndividualMale
Primary Taxonomy2086S0127X
Provider Legal NameDR. MADHU GARY SUBRAMANIANCredential: M.D.
Location Address4940 EASTERN AVE BLDG 5THBaltimore, MD 21224-2735
Mailing Address9910 Franklin Square Dr Ste 2110Baltimore, MD 21236-4902 · (410) 933-6423
Phone(410) 550-0400
Fax(410) 550-1822
Sole ProprietorNo
Medical School CMSEmory University School Of MedicineGraduated 2011
Enumeration DateApril 4, 2011
Last NPPES UpdateSeptember 14, 20203 updates tracked since enumeration
NPPES CertifiedSeptember 14, 2020
✔ NPI 1851680466 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgery · Trauma SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code2086S0127X
Licenses✔ Licensed in MD · D89722✔ Licensed in PA · MD464252
Definition
Trauma surgery is a recognized subspecialty of general surgery. Trauma surgeons are physicians who have completed a five-year general surgery residency and usually continue with a one to two year fellowship in trauma and/or surgical critical care, typically leading to additional board certification in surgical critical care. There is no trauma surgery board certification at this point. To obtain board certification in surgical critical care, a fellowship in surgical critical care or anesthesiology critical care must be completed during or after general surgery residency.
4940 EASTERN AVE BLDG 5TH, Baltimore, MD 21224
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Absolute Total Care, Ambetter of North Carolina, Ambetter of Tennessee and more.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. Madhu Gary Subramanian 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 ID1052649282
PECOS Enrollment IDI20251010003724
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

2

Medicare enrollment records show Madhu Subramanian reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Duke University Health System, Inc.
258 mi
Internal Medicine
4220 N ROXBORO ST
Durham, NC 27704
  • Reassigned Medicare billing, North Carolina enrollment
  • 1,482 clinicians in this Medicare group
NPI 1962721308 (919) 471-8344
Duke Health Integrated Practice, Inc
259 mi
Foot and Ankle Surgery
2609 N DUKE ST STE 301
Durham, NC 27704
  • Reassigned Medicare billing, North Carolina enrollment
  • 3,671 clinicians in this Medicare group
NPI 1518725936 (919) 477-9333

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 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.

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.
164 services88 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.
96 services50 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
90 services32 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.
60 services59 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.
48 services48 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 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.
35 services24 patients

Hospital Affiliations CMS Care Compare 4

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

Duke University Hospital

Acute Care Hospitals · Durham, NC
5/5 CMS rating
OwnershipProprietary
CMS Certification Number340030
Location2100 Erwin RdDurham, NC 27705 · Durham County
Emergency services Birthing friendly

Maria Parham Medical Center

Acute Care Hospitals · Henderson, NC
2/5 CMS rating
OwnershipProprietary
CMS Certification Number340132
LocationPO Box 59Henderson, NC 27536 · Vance County
Emergency services Birthing friendly

Duke Regional Hospital

Acute Care Hospitals · Durham, NC
4/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number340155
Location3643 N Roxboro StreetDurham, NC 27704 · Durham County
Emergency services Birthing friendly

Person Memorial Hospital

Acute Care Hospitals · Roxboro, NC
OwnershipProprietary
CMS Certification Number340159
Location615 Ridge RdRoxboro, NC 27573 · Person County
Emergency services

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.

74.39/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality64.71
Promoting Interoperability97
Improvement Activities40
Cost52.43

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 Madhu Subramanian's NPI number?

The NPI number for Madhu Subramanian is 1851680466. It was assigned to this individual provider in the NPPES registry on April 4, 2011.

Where is Madhu Subramanian located?

Madhu Subramanian practices at 4940 Eastern Ave Bldg 5th, Baltimore, MD 21224. The listed phone number is (410) 550-0400.

What is Madhu Subramanian's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Trauma Surgery, with taxonomy code 2086S0127X.

Is Madhu Subramanian enrolled in Medicare?

Yes. Madhu Subramanian 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 Madhu Subramanian's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Madhu Subramanian reassigns Medicare benefits to 2 organizations: Duke University Health System, Inc. (Durham, NC) and Duke Health Integrated Practice, Inc (Durham, NC). 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 Madhu Subramanian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Madhu Subramanian accept?

Health plans from Ambetter from Absolute Total Care, Ambetter of North Carolina, Ambetter of Tennessee, Blue Cross and Blue Shield of NC and Cigna Healthcare list Madhu Subramanian 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 Madhu Subramanian affiliated with any hospitals?

According to CMS data, Madhu Subramanian is affiliated with Duke University Hospital, Maria Parham Medical Center, Duke Regional Hospital and Person Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Madhu Subramanian was last updated on September 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.