ANDREW SANGMIN CHI M.D.
NPI 1801120423
Radiology - Diagnostic Radiology in Philadelphia, PA

Q: What is Andrew Chi's NPI number?

The NPI number for Andrew Chi is 1801120423. It was assigned to this individual provider in the NPPES registry on September 29, 2009.

Q: What is Andrew Chi's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Q: When was this NPI record last updated?

The NPPES record for Andrew Chi was last updated on October 2, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.

Active since September 29, 2009PECOS EnrolledAccepts Medicare Assignment

85.48/100

CMS Quality Rating

3737 MARKET ST, 8TH FLOOR, PHILADELPHIA, PA 19104(215) 294-9522 Get Directions Write a Review

NPPES record last updated: October 2, 2015. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Andrew Sangmin Chi M.d. NPPES

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

ANDREW SANGMIN CHI M.D. (NPI 1801120423) is an individual diagnostic radiology provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD450436) and active in the NPI registry since September 2009. He is enrolled in Medicare PECOS, is affiliated with Hospital Of Univ Of Pennsylvania, and is a graduate of Johns Hopkins University School Of Medicine (2009).

NPPES Registry Identity

NPI1801120423

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameANDREW SANGMIN CHICredential: M.D.

Location Address3737 MARKET ST, 8TH FLOORPhiladelphia, PA 19104-5545

Mailing Address3737 Market St, 8th FloorPhiladelphia, PA 19104-5545 · (215) 294-9522

Phone(215) 294-9522

Sole ProprietorNo

Medical School CMSJohns Hopkins University School Of MedicineGraduated 2009

Enumeration DateSeptember 29, 2009

Last NPPES UpdateOctober 2, 2015

✔ NPI 1801120423 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

License✔ Licensed in PA · MD450436

Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

3737 MARKET ST, Philadelphia, PA 19104

Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar 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

Andrew Sangmin Chi 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 ID4486886835

PECOS Enrollment IDI20140813001222

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

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

University Of Penn-Medical Group

Same address

Sports Medicine

3737 MARKET ST, 9TH FLOOR
Philadelphia, PA 19104

Reassigned Medicare billing, Pennsylvania enrollment
3,488 clinicians in this Medicare group

NPI 1285022202 (215) 662-8777

Clinical Health Care Associates Of New Jersey, PC

11 mi

Internal Medicine

409 ROUTE 70 E
Cherry Hill, NJ 08034

Reassigned Medicare billing, New Jersey enrollment
Also billed through NPI 1508019241 (New Jersey)
793 clinicians in this Medicare group

NPI 1134278971 (856) 427-4336

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 57

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.

Dxa bone density measurement of hip, pelvis, spine 77080

A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.

849 services849 patients

X-ray of knee, 4 or more views 73564

An X-ray of the knee, 4 or more views, is a non-invasive imaging test. It involves capturing multiple images of your knee from different angles. This helps in diagnosing conditions such as fractures, arthritis, or infections. The procedure is quick and painless.

182 services134 patients

X-ray of knee, 3 views 73562

An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.

142 services118 patients

X-ray of spine, 1 view 72020

An X-ray of the spine, 1 view, is a quick and painless imaging procedure. It uses radiation to capture images of the bones in your spine. It helps in detecting issues like fractures, infections, or tumors. You'll be positioned, the machine captures the image, and you're done. It's a safe, routine procedure.

137 services96 patients

X-ray of knee, 1-2 views 73560

An X-ray of the knee with 1-2 views is a quick, painless test that produces images of the knee bones. It helps identify fractures, infections, or changes in the knee joint. During the procedure, you'll be asked to stay still while the X-ray machine captures the images.

115 services105 patients

X-ray of foot, minimum of 3 views 73630

An X-ray of the foot, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones and tissues in your foot. This helps to identify fractures, infections, or other abnormalities. Multiple views ensure a comprehensive examination.

110 services92 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

106 services102 patients

Dxa bone density measurement of forearm, finger, hand, or foot 77081

A DXA bone density measurement of the forearm, finger, hand, or foot is a non-invasive procedure that uses X-rays to measure the amount of calcium and other minerals in your bones. This test helps to assess the strength of your bones and your risk of fractures.

98 services98 patients

X-ray of shoulder, minimum of 2 views 73030

An X-ray of the shoulder, with a minimum of 2 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of your shoulder bones. This helps in diagnosing conditions like fractures, arthritis, or other abnormalities. The procedure is quick and painless.

93 services85 patients

X-ray of chest, 1 view 71045

A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.

69 services61 patients

X-ray of pelvis, 1-2 views 72170

An X-ray of the pelvis, 1-2 views, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the lower part of your torso. These images help to detect any abnormalities or injuries in your hip bones and surrounding structures.

67 services66 patients

X-ray of lower and sacral spine, 2-3 views 72100

An X-ray of the lower and sacral spine involves capturing images of your lower back area, including the tailbone. This procedure helps in identifying problems like fractures, infections, or deformities. 2-3 different angle views provide a comprehensive picture.

64 services61 patients

X-ray of hand, minimum of 3 views 73130

An X-ray of the hand, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones in your hand from different angles. This helps in diagnosing fractures, infections, arthritis, or other abnormalities. It's quick and painless.

55 services45 patients

X-ray of ankle, minimum of 3 views 73610

An ankle X-ray is a quick, painless imaging test. It involves capturing at least three different images or 'views' of your ankle using small amounts of radiation. These images help identify any abnormalities or injuries, such as fractures or arthritis.

49 services44 patients

X-ray of wrist, minimum of 3 views 73110

An X-ray of the wrist, minimum of 3 views, is a diagnostic procedure that uses radiation to create images of your wrist from different angles. This helps detect fractures, infections, or other abnormalities for accurate diagnosis and treatment planning.

43 services38 patients

X-ray of lower leg, 2 views 73590

An X-ray of the lower leg, 2 views, is a quick, painless test that produces images of the bones in your lower leg. It helps to identify fractures, infections, or diseases. Two different angles are used to provide a comprehensive view of the leg's structure.

43 services39 patients

X-ray of shoulder, minimum of 2 views 73030

41 services39 patients

X-ray of upper spine, 2-3 views 72040

An X-ray of the upper spine, with 2-3 views, is a painless procedure that employs a small amount of radiation to capture images of your neck and upper back. It assists in diagnosing conditions like arthritis, fractures, or spinal deformities.

38 services37 patients

X-ray of thigh bone, minimum 2 views 73552

An X-ray of the thigh bone is a non-invasive imaging test. It involves passing a small amount of radiation through the thigh to produce images of the bone structure. At least two different angles are captured for a comprehensive view. This helps detect fractures, infections, or other abnormalities.

38 services36 patients

Ct scan of leg without contrast 73700

A CT scan of the leg is a non-invasive imaging test that uses X-rays to capture detailed images of your leg's bones, muscles, and blood vessels. It doesn't use contrast dye and doesn't cause any pain. It helps in diagnosing injuries or diseases.

36 services33 patients

X-ray of entire middle and lower spine, 2-3 views 72082

An X-ray of your middle and lower spine involves capturing images of these areas to identify any abnormalities. The procedure involves taking 2-3 different views for a comprehensive understanding. It's non-invasive and usually painless, helping doctors diagnose conditions like fractures or infections.

35 services35 patients

Complete ultrasound scan of joint 76881

A complete ultrasound scan of a joint is a non-invasive procedure using sound waves to create images of your joint. It helps identify problems like inflammation, injury, or disease. It's painless, safe, and doesn't involve radiation.

34 services31 patients

X-ray of both hips, 2 views 73521

An X-ray of both hips, 2 views, is an imaging test that uses a small amount of radiation to create detailed pictures of your hip joints. This procedure helps to detect fractures, infections, or other abnormalities in the hip area. Two different angles will be captured for a comprehensive assessment.

33 services33 patients

X-ray of elbow, minimum of 3 views 73080

An elbow X-ray with a minimum of 3 views is a non-invasive imaging test. It helps visualize the bones of the elbow from different angles. This aids in diagnosing conditions like fractures or arthritis. The procedure is quick, painless, and usually takes around 15 minutes.

31 services29 patients

X-ray of knee, 3 views 73562

29 services24 patients

X-ray of foot, minimum of 3 views 73630

29 services25 patients

X-ray of forearm, 2 views 73090

An X-ray of the forearm, 2 views, is a diagnostic procedure where two different pictures of your forearm are taken using a small amount of radiation. These images help doctors assess your bone health and identify any fractures, infections, or other abnormalities.

26 services22 patients

X-ray of lower and sacral spine, minimum of 4 views 72110

An X-ray of the lower and sacral spine involves capturing images of your lower back and tailbone area. It helps in identifying issues like fractures, arthritis, or other abnormalities. At least four different angles or 'views' are taken to get a comprehensive picture.

22 services22 patients

X-ray of hip, 2-3 views 73502

22 services21 patients

X-ray of hand, minimum of 3 views 73130

21 services16 patients

Mri scan of leg joint without contrast 73721

An MRI scan of your leg joint is a non-invasive procedure that uses magnetic fields and radio waves to create detailed images of the structures within your leg. This helps doctors diagnose or monitor conditions without using contrast dye.

20 services20 patients

Mri scan of lower spinal canal without contrast 72148

An MRI scan of the lower spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to produce detailed images of your lower spine. This helps identify issues like disc problems, tumors, or nerve conditions. No dye is used.

19 services19 patients

X-ray of upper arm, minimum of 2 views 73060

An X-ray of the upper arm with a minimum of 2 views involves capturing images of your arm from different angles. This helps in assessing the bones and surrounding tissues for any abnormalities or injuries. It's a quick, painless procedure.

19 services18 patients

X-ray of middle spine, 2 views 72070

An X-ray of the middle spine, or thoracic spine, involves capturing two different images of the area. This non-invasive procedure uses small amounts of radiation to visualize the bones and tissues in your back, helping to identify any abnormalities or injuries.

18 services17 patients

X-ray of ankle, minimum of 3 views 73610

18 services15 patients

Ct scan of leg with contrast material 73701

A CT scan of the leg with contrast material is an imaging procedure. A special dye, the contrast material, is used to highlight certain areas, making them easier to see. This scan helps to detect issues like fractures, infections, or tumors in the leg.

17 services15 patients

Mri scan of leg before and after contrast 73720

An MRI scan of the leg involves using a magnetic field and radio waves to create detailed images of the structures within your leg. Initially, images are taken without a contrast agent. Then, a contrast agent is injected into your body to enhance the images, highlighting certain areas for closer examination.

17 services16 patients

Mri scan of leg joint without contrast 73721

17 services17 patients

Mri scan of arm joint without contrast 73221

An MRI scan of the arm joint is a non-invasive imaging procedure that uses magnetic fields and radio waves to create detailed images of the structures within your arm joint. No contrast dye is used in this process. It helps to diagnose or monitor conditions like arthritis, injuries, or infections.

16 services16 patients

X-ray of foot, 2 views 73620

An X-ray of the foot, 2 views, is a quick, painless test that produces images of the bones and structures inside your foot. Two different angles are used to provide a comprehensive view. This helps doctors diagnose fractures, infections, or other abnormalities.

16 services15 patients

Mri scan of leg joint before and after contrast 73723

An MRI scan of your leg joint involves using a magnetic field and radio waves to create detailed images of the structures within your joint. This process is done twice, once before and once after a contrast agent is injected. The contrast helps to highlight certain tissues for a clearer picture, aiding in diagnosis.

16 services16 patients

X-ray of finger, minimum of 2 views 73140

An X-ray of the finger involves capturing images of your finger from at least two different angles. This non-invasive procedure helps in visualizing the bones and joints, aiding in the diagnosis of fractures, infections, or other abnormalities. Minimal discomfort may be experienced.

15 services15 patients

X-ray of abdomen, 1 view 74018

An X-ray of the abdomen, 1 view, is a quick and painless imaging test. It uses a small amount of radiation to produce images of the structures in your abdomen, such as the stomach, liver, and intestines. This can help identify issues like blockages, infections, or injuries.

15 services13 patients

X-ray of lower and sacral spine, minimum of 4 views 72110

14 services14 patients

X-ray of pelvis, minimum of 3 views 72190

An X-ray of the pelvis with a minimum of 3 views is a diagnostic procedure that uses radiation to create images of your lower body area. This helps in detecting issues like fractures, arthritis, or other abnormalities. It's quick, non-invasive, and typically painless.

14 services12 patients

X-ray of shoulder, 1 view 73020

An X-ray of the shoulder, 1 view, is a quick, painless test that produces images of the bones and tissues within your shoulder. It helps diagnose conditions such as fractures, infections, or arthritis. You'll be positioned to capture the best view, then a small dose of radiation creates the image.

14 services14 patients

X-ray of ankle, 2 views 73600

An X-ray of the ankle, 2 views, is a quick, painless test that produces images of the bones and joints in your ankle. Two different angles are used to provide a more complete picture. It helps detect fractures, sprains, arthritis, or other abnormalities. It's safe and typically takes only a few minutes.

14 services12 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

12 services11 patients

X-ray of lower and sacral spine, 2-3 views 72100

12 services12 patients

X-ray of hip, 1 view 73501

An X-ray of the hip, 1 view, is a quick, painless test where a small amount of radiation is used to produce images of the hip joint. This helps in diagnosing conditions like arthritis or fractures. You'll be positioned so that the X-ray machine can capture the best image of your hip.

12 services12 patients

Fluoroscopic guidance for needle placement 77002

Fluoroscopic guidance for needle placement is a medical procedure that uses a special X-ray technology to help accurately place a needle in the body. It's often used in biopsies, injections or other treatments to ensure precision and safety.

12 services11 patients

Biopsy of bone using needle or trocar 20220

A biopsy of the bone using a needle or trocar is a procedure where a small sample of bone tissue is collected for testing. This helps diagnose conditions such as infection, inflammation, or cancer. The process involves inserting a thin needle or trocar into the bone to extract the sample.

11 services11 patients

X-ray of upper spine, 4-5 views 72050

An X-ray of the upper spine with 4-5 views is a non-invasive imaging test. It uses radiation to capture detailed images of the bones and structures in your neck and upper back. This procedure helps identify issues like fractures, infections, or deformities.

11 services11 patients

Mri scan of upper spinal canal without contrast 72141

An MRI scan of the upper spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your upper spine. This helps doctors identify issues such as injuries, infections or diseases. No dye is used.

11 services11 patients

Mri scan of lower spinal canal without contrast 72148

11 services11 patients

Mri scan of arm joint without contrast 73221

11 services11 patients

Review by radiologist of ct guidance for needle placement 77012

This process involves a radiologist examining CT scan images to accurately guide a needle's placement within the body. This technique is often used for biopsies or treatments, ensuring precision and safety.

11 services11 patients

Hospital Affiliations CMS Care Compare 5

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

Hospital Of Univ Of Pennsylvania

Acute Care Hospitals · Philadelphia, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390111

Location34th & Spruce StsPhiladelphia, PA 19104 · Philadelphia County

Emergency services Birthing friendly

Albert Einstein Medical Center

Acute Care Hospitals · Philadelphia, PA

3/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number390142

Location5501 Old York RoadPhiladelphia, PA 19141 · Philadelphia County

Emergency services Birthing friendly

Thomas Jefferson University Hospital

Acute Care Hospitals · Philadelphia, PA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390174

Location111 South 11th StreetPhiladelphia, PA 19107 · Philadelphia County

Emergency services Birthing friendly

Penn Presbyterian Medical Center

Acute Care Hospitals · Philadelphia, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number390223

Location51 North 39th StreetPhiladelphia, PA 19104 · Philadelphia County

Emergency services

Pennsylvania Hospital

Acute Care Hospitals · Philadelphia, PA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390226

Location800 Spruce StreetPhiladelphia, PA 19107 · Philadelphia County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19104 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

$92.69 typical visit price

range $59.88 – $180.99

Typical copayment $23.17 (range $14.97 – $45.24)

Most-billed visit code 99203

Established Patient

$74.47 typical visit price

range $19.30 – $147.29

Typical copayment $18.61 (range $4.82 – $36.82)

Most-billed visit code 99213

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.

85.48/100

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

Scored as part of a group practice

Quality

73.6

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.

SAMIR MEHTA MD

Orthopaedic Surgery

3737 MARKET ST, 7 FLOOR
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-3340

GINA MARIA MCGARVEY PA-C

Physician Assistant

3737 MARKET ST
PHILADELPHIA, PA 19104

Philadelphia County (267) 575-3110

MICHAEL MALONEY

Family Medicine

3737 MARKET ST, 9TH FL
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-8777

DR. JEREMY B KATZEN M.D.

Internal Medicine (Pulmonary Disease)

3737 MARKET ST, 10TH FL
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-3202

AILEEN LO CRNP

Nurse Practitioner

3737 MARKET ST, 4TH FLOOR
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-8699

CRAIG D KATZ PA-C

Physician Assistant

3737 MARKET ST, 7TH FLOOR
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-3340

PRISCILLA ESADAH MD

Family Medicine

3737 MARKET ST, 9TH FLOOR
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-8777

LAUREN ANNE SMITH CRNP

Nurse Practitioner (Family)

3737 MARKET ST, 7TH FLOOR
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-3340

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 Andrew Chi's NPI number?

The NPI number for Andrew Chi is 1801120423. It was assigned to this individual provider in the NPPES registry on September 29, 2009.

Where is Andrew Chi located?

Andrew Chi practices at 3737 Market St 8th Floor, Philadelphia, PA 19104. The listed phone number is (215) 294-9522.

What is Andrew Chi's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Andrew Chi enrolled in Medicare?

Yes. Andrew Chi 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 Andrew Chi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Chi reassigns Medicare benefits to 2 organizations: University Of Penn-Medical Group (Philadelphia, PA) and Clinical Health Care Associates Of New Jersey, PC (Cherry Hill, NJ). 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 Andrew Chi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Andrew Chi accept?

Health plans from Oscar Health list Andrew Chi 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 Andrew Chi affiliated with any hospitals?

According to CMS data, Andrew Chi is affiliated with Hospital Of Univ Of Pennsylvania, Albert Einstein Medical Center, Thomas Jefferson University Hospital, Penn Presbyterian Medical Center and Pennsylvania Hospital.

When was this NPI record last updated?

The NPPES record for Andrew Chi was last updated on October 2, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.