Quality Rating: 100 out of 100 score
NPI Status: Active since November 15, 2005
2112 Harrisburg Pike
Lancaster,
Post Code: 17601
Phone: (717) 544-3500
Fax: (717) 544-3501
Mark H Johnston Md is a Internal Medicine, Gastroenterology in Lancaster, . Mark H Johnston Md practices all healthcare services and medical treatments related to Internal Medicine, Gastroenterology. The NPI Number for Mark H Johnston Md is 1003898131. The last update date is 2019-06-13.
Mark H Johnston Md's current location address is 2112 Harrisburg Pike, Lancaster, . You can contact this provider via phone number (717) 544-3500 and fax number (717) 544-3501. The mailing address for Mark H Johnston Md is 2112 Harrisburg Pike, Lancaster, . To know further, please read the information below!
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.
| Identifier | Type / Code | Identifier State | Identifier Issuer |
|---|---|---|---|
| 093677KKU | Other (non-Medicare) (01) | Pennsylvania (PA) | MEDICARE |
| 1012082120002 | MEDICAID (05) | Pennsylvania (PA) | |
| 1012082120004 | MEDICAID (05) | Pennsylvania (PA) | |
| 1012082120005 | MEDICAID (05) | Pennsylvania (PA) | |
| P01832235 | Other (non-Medicare) (01) | Pennsylvania (PA) | RR MEDICARE |
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The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.
| Start with the original NPI number, the last digit is the check digit and is not used in the calculation. | |||||||||
| 1 | 0 | 0 | 3 | 8 | 9 | 8 | 1 | 3 | 1 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 0 | 0 | 3 | 16 | 9 | 16 | 1 | 6 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. 20031691616 | |||||||||
| 2 + 0 + 0 + 3 + 1 + 6 + 9 + 1 + 6 + 1 + 6 + 24 = 59 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 60 - 59 = 1 | 1 | ||||||||
The NPI number 1003898131 is valid because the calculated check digit 1 using the Luhn validation algorithm matches the last digit of the original NPI number.
The following 5 providers are registered at the same or nearby location.
| NPI | Name / Type | Taxonomy | Address |
|---|---|---|---|
| 1003898115 | MICHAEL JOHN WOLFF Individual |
Dentist, General Practice |
369 BUTLER ST PITTSBURGH, Pennsylvania (PA) 412-784-0228 |
| 1003897992 | SUSAN ROTHENBERG Individual |
Obstetrics & Gynecology |
10 UNION SQ E NEW YORK, New York (NY) 212-420-4236 |
| 1003897695 | ALINA REYNOLDS Individual |
Registered Nurse, Critical Care Medicine |
1245 S CEDAR CREST BLVD STE 301 ALLENTOWN, Pennsylvania (PA) 610-402-8896 |
| 1003897596 | PAUL J RUSCHAK Individual |
Specialist |
100 STOOPS DR MONONGAHELA, Pennsylvania (PA) 724-483-5507 |
| 1003897588 | DIANE MW MILLER Individual |
Counselor, Professional |
632 CUMBERLAND ST LEBANON, Pennsylvania (PA) 717-273-1710 |