Mark Harrison, MD
Nephrology Physician · Boulder, CO
Mark Harrison, MD is a nephrology physician with a practice address in Boulder, Colorado, and NPI 1508236910, issued on Sep 28, 2015. Check the license (Colorado 0025415, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark Harrison
- Credential
- MD
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 0025415 CO
Self-reported in NPPES; status is on the state search - Practice location
- 546 14TH St, Boulder, CO 80302
- Phone
- (303) 938-8844
- Enumerated
- Sep 28, 2015
- Record last updated
- Sep 28, 2015 (not updated in 11 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 182 in Colorado → Look up another NPI →
Verify Mark Harrison in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 0025415Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $15.08
1 payment: food and beverage; the largest payer was Sumitomo Pharma America, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Mark Harrison among 182 nephrology physician records in Colorado
Mark Harrison, MD is one of 182 nephrology physician records with a practice address in Colorado. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 90% of them.
- NPI issued2015 · 90% of these records are older, 9% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 73% of these records are
- Record last updated2015 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Colorado
There are 182 nephrology physician records in Colorado.
All 182 in Colorado → Every provider in Boulder → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Alan Koffler, M.D.Boulder, CO 803021073773461
- Sandra Malakauskas, M.D.Denver, CO 802461215100201
- Paul Miller, MDLakewood, CO 802321174663819
- Melvyn Klein, MDDenver, CO 802301780633560
- Brad Marder, MDDenver, CO 802301487636775
- Lisa Prince, M.D.Denver, CO 802301689767154
- Michael Shapiro, MDDenver, CO 802301396727137
- Karen Lochhead, MDThornton, CO 802291275524761
Common questions
What is Mark Harrison, MD's NPI number?
Mark Harrison, MD's National Provider Identifier (NPI) is 1508236910, issued on Sep 28, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mark Harrison, MD located?
The NPPES record lists a practice address at 546 14TH St, Boulder, CO, 80302. Phone: (303) 938-8844. Providers update this record themselves, so call before visiting.
How can I verify Mark Harrison, MD's license?
NPPES lists Colorado license number 0025415, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.