Active NPI
Mark E Williams, MD
- Nephrology Physician
- Boston, MA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Nephrology Physician
- License
- 45103
- Practice address
- 1 Joslin PL
Boston, MA 02215-5306 - Phone
- (617) 732-2477
- Fax
- (617) 732-2467
- NPI assigned
- Jul 3, 2006
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Specialist | 174400000X | 45103 | MA | |
| Nephrology Physician | 207RN0300X | 45103 | MA | Primary |
Addresses
Primary practice location
1 Joslin PL
Boston, MA 02215-5306
Mailing address
31 Hereford St
Boston, MA 02115-1718
Phone (617) 267-5652
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0112542 | Medicaid | MA |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in MA, CA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
Care Compare profile
Medicare Care Compare- Specialty
- Nephrology
- Education
- Indiana University School of Medicine, 1977
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Telehealth
- Offers telehealth services
- Group practices
Practice addresses (Care Compare)
1441 Eastlake Ave
Los Angeles, CA 90089-0112
Phone (323) 865-3000
1500 San Pablo St
Los Angeles, CA 90033-5313
Phone (323) 442-8444
1516 San Pablo St
Los Angeles, CA 90033-5313
Phone (800) 872-2273
1520 San Pablo St
Los Angeles, CA 90033-5310
Phone (800) 872-2273
1520 San Pablo St 1St Floor N
Los Angeles, CA 90033-5310
Phone (800) 872-2273
2310 Alcazar St
Los Angeles, CA 90033-5327
Phone (323) 441-9966
300 W Hungtington Dr
Arcadia, CA 91007-3402
Phone (626) 898-8000
Hospital & facility affiliations
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 45103 | MA | MD | Nephrology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Joslin Clinic Inc | Current | Accepting new patients | |
| Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc | Current | Accepting new patients | |
| Beth Israel Deaconess Medical Center, Inc. | Current | Accepting new patients | |
| Usc Care Medical Group, Inc | Current | Accepting new patients | |
| Usc Care Medical Non-Contracted LLC | Nephrology | Current | Accepting new patients |
| Usc Care Medical Group, Inc | Current | Accepting new patients | |
| Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc | Current | Accepting new patients | |
| Beth Israel Deaconess Medical Center, Inc. | Current | Accepting new patients |
Locations
300 W Huntington Dr
Arcadia, CA 91007
Phone (626) 445-4441
420 34th St
Bakersfield, CA 93301
Phone (661) 324-4647
1500 San Pablo St
Los Angeles, CA 90033
Phone (323) 443-8500
1520 San Pablo St
Fl 4
Los Angeles, CA 90033
Phone (323) 442-5849
1516 San Pablo St
Los Angeles, CA 90033
Phone (323) 276-3705
1441 Eastlake Ave
Los Angeles, CA 90089
Phone (323) 865-3000
2310 Alcazar St
Los Angeles, CA 90033
Phone (323) 441-9966
1520 San Pablo St
Los Angeles, CA 90033
Phone (323) 442-5849
1 Joslin Pl
Boston, MA 02215
Phone (617) 309-2400
330 Brookline Ave
Boston, MA 02215
Phone (617) 667-2000
1200 Centre St
Roslindale, MA 02131
Phone (617) 363-8000
Organizations & group practices 8
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- General Practice Physician
- Los Angeles, CA
- NPI 1902846306
-
- Nephrology Physician
- Los Angeles, CA
- NPI 1659509206
-
- General Acute Care Hospital
- Boston, MA
- NPI 1548202641
-
- Internal Medicine Physician
- Boston, MA
- NPI 1194765438
-
- Multi-Specialty Clinic/Center
- Boston, MA
- NPI 1528003621
-
- Ambulance
- Boston, MA
- NPI 1518600501
-
- Emergency Medicine Physician
- Boston, MA
- NPI 1316987993
-
- Durable Medical Equipment & Medical Supplies
- Pasadena, CA
- NPI 1427937390
Hospital & facility affiliations 5
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- End-Stage Renal Disease (ESRD) Treatment Clinic/Center
- Los Angeles, CA
- NPI 1639132772
Dialysis facility
-
- General Acute Care Hospital
- Los Angeles, CA
- NPI 1598773715
-
- General Acute Care Hospital
- Los Angeles, CA
- NPI 1013514199
-
- General Acute Care Hospital
- Los Angeles, CA
- NPI 1417554528
-
- General Acute Care Hospital
- Glendale, CA
- NPI 1033716147
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1151884800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1303689600000",
"number": "1184653891",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "31 HEREFORD ST",
"city": "BOSTON",
"state": "MA",
"postal_code": "021151718",
"telephone_number": "617-267-5652",
"fax_number": "617-735-1916"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1 JOSLIN PL",
"city": "BOSTON",
"state": "MA",
"postal_code": "022155306",
"telephone_number": "617-732-2477",
"fax_number": "617-732-2467"
}
],
"practiceLocations": [],
"basic": {
"last_name": "WILLIAMS",
"first_name": "MARK",
"middle_name": "E",
"name_prefix": "Dr.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-07-03",
"last_updated": "2011-04-25",
"status": "A"
},
"taxonomies": [
{
"code": "174400000X",
"taxonomy_group": "",
"desc": "Specialist",
"state": "MA",
"license": "45103",
"primary": false
},
{
"code": "207RN0300X",
"taxonomy_group": "",
"desc": "Internal Medicine, Nephrology",
"state": "MA",
"license": "45103",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "0112542",
"state": "MA"
}
],
"endpoints": [],
"other_names": []
}
Other providers in Boston, MA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 25, 2011; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.